Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz - Rabenhorst, Ludwig, 1806 -1881 (E. Kummer, 1889)

Draft noxious weed management plan - Montana. Department of Fish, Wildlife,; Parks. Region 3 (The Region, 1994)

Dutch N. W. New Guinea. A contribution to the phytogeography and flora of the Arfak mountains, & c - Gibbs, Lilian S. (Lilian Suzette), 1870 -1925 (Taylor and Francis, 1917)

Eastern states endangered plants - Arndt, Raymond E. (U.S. Dept. of the Interior, Bureau of Land Management, 1980)

ECOfronteras - ECOSUR (Institution : Mexico) (El Colegio de la Frontera Sur, 2007)

ECOfronteras - ECOSUR (Institution : Mexico) (El Colegio de la Frontera Sur, 2013)

An ecological survey in northern Michigan - Adams, Charles C. (Charles Christopher), 1873 -1955 (Wynkoop Hallenbeck Crawford co., state printers, 1906)

Ecological types of the upper Gunnison Basin : review draft - Johnston, Barry C. (U.S. Department of Agriculture, Forest Service, Grand Mesa-Uncompahgre-Gunnison National Forests, 1997)

Ecologically sensitive sites in Africa - World Bank. (World Bank, 1993)

Écologie - Société Française D'Écologie (Société française d'écologie, 1994)

Écologie - Société Française D'Écologie (Société française d'écologie, 1998)

Écologie - Société Française D'Écologie (Société française d'écologie, 1997)

Ecology of small mammals in a flatwoods habitat in north-central Florida, with emphasis on the cotton rat (Sigmodon hispidus) - Layne, James N. (American Museum of Natural History, 1974)

Ecology of the Svjatoj Nos wetlands, Lake Baikal : results of the Svjatoj Nos 1991 expedition - Mlíkovský, Jiří (Ninox Press, 1992)

Ecosystem management : rare species and significant habitats : proceedings of the 15th Annual Natural Areas Conference - Mitchell, Richard S., 1938 - (New York State Museum, University of the State of New York, State Education Dept, 1990)

Edible Wild Plants of Canada - National Museum of Natural Sciences (Canada) (National Museums of Canada, 1978)

Edible Wild Plants of Canada - National Museum of Natural Sciences (Canada) (National Museums of Canada, 1980)

Eesti Looduseuurijate Seltsi aastaraamat - Eesti Looduseuurijate Selts. (Valgus, 1906)

Effect of operational fertilization on foliar nutrient content and growth of young douglas-fir and Pacific silver fir - Pacific Northwest Research Station (Portland, Or.) (U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1986)

The efficacy and economic effects of plant quarantines in California : report of a committee - University of California (1868-1952). College of Agriculture. (Agricultural Experiment Station, 1933)

Einführung in die Pflanzenpathologie; ein Lehrbuch für Land- und Forstwirte, Gärtner und Biologen - Morstatt, Hermann Albert, 1877 - (Gebr. Borntraeger, 1923)

Electron-microscopic structure of protozoa - Pitelka, Dorothy R. (Dorothy Riggs), 1920 - (Pergamon Press; [distributed in the Western Hemisphere by Macmillan, New York], 1963)

Elements of plant biology - Tansley, A. G., Sir, (Arthur George), 1871 -1955 (Allen, 1922)

Elements of plant biology - Tansley, A. G., Sir, (Arthur George), 1871 -1955 (George Allen & Unwin Ltd, 1922)

Elements of plant biology - Tansley, A. G., Sir, (Arthur George), 1871 -1955 (G. Allen & Unwin, 1923)

Elements of plant biology - Tansley, A. G., Sir, (Arthur George), 1871 -1955 (George Allen & Unwin ltd, 1922)

Elysium marianum; ferns and fern-allies - Tidestrom, Ivar, 1865 -1956 (The author, 1906)

Elysium marianum ferns and fern allies - Tidestrom, Ivar, 1864 -1956 ([Ivar Tidestrom], 1907)

The Enterprise, Wisconsin, Radiation Forest : preirradiation ecological studies - North Central Forest Experiment Station (Saint Paul, Minn.). Institute of Forest Genetics. (Institute of Forest Genetics, North Central Forest Experiment Station, Forest Service, U.S.D.A, 1974)

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Entomologische berichten - Nederlandse Entomologische Vereniging (1932)

Entomologische berichten - Nederlandse Entomologische Vereniging (1953)

Entomologische berichten - Nederlandse Entomologische Vereniging (1964)

Entomologische berichten - Nederlandse Entomologische Vereniging (1969)

Entomologische berichten - Nederlandse Entomologische Vereniging (1974)

Entomologische berichten - Nederlandse Entomologische Vereniging (1987)

Entomologische berichten - Nederlandse Entomologische Vereniging (1989)

Entomologische berichten - Nederlandse Entomologische Vereniging (2000)

Entomologische berichten - Nederlandse Entomologische Vereniging (2003)

Entomologische berichten - Nederlandse Entomologische Vereniging (2006)

Entomologische berichten - Nederlandse Entomologische Vereniging (2015)

Entomologische berichten - Nederlandse Entomologische Vereniging (2017)

Entomologische berichten - Nederlandse Entomologische Vereniging (2018)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 1967)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 1974)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 1977)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 1992)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 1996)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 1998)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 1999)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 2000)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 2002)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 2004)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 2005)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 2006)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 2007)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 2009)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 2010)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 2011)

The entomologist's record and journal of variation - Tutt, James William, 1858 -1911 (s.n, 2012)

An enumeration of the vascular plants known from Surinam : together with their distribution and synonymy - Pulle, A. A. (August Adriaan), 1878 -1955 (E. J. Brill, 1906)

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An environmental profile of the Black Sea Coast - Gillett, Harriet J. (WCMC, 1997)

Enzyme and metabolic inhibitors - Webb, John Leyden. (Academic Press, 1963)

Épacridacées - Laboratoire de phanérogamie, Paris (1975)

Eradication of ferns from pasture lands in the eastern United States - Cox, H. R. (Herbert Randolph) (U.S. Dept. of Agriculture, 1915)

Ergänzungsheft ... der Mitteilungen aus den deutschen Schutzgebieten (E.S. Mittler, 1913)

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The essentials of botany - Bessey, Ernst Athearn, 1877 -1957 (H. Holt and company, 1914)

Essentials of college botany - Bessey, Ernst Athearn, 1877 -1957 (H. Holt, 1914)

Estudios botánicos : presentados en la primera Reunión Nacional de la Sociedad Argentina de Ciencias Naturales, Tucuman, 1916 ... - Hicken, Cristóbal M. (Cristóbal María), 1875 -1933 (Coni, 1919)

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Exkursionsflora für Österreich, mit Ausschlus von Galizien, Bukowina und Dalmatien - Fritsch, Karl, 1864 -1934 (Karl Gerolds Sohn, 1909)

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F. R. Fosberg field notebook No. 65, begin with no. 42973, end with 43244 - Fosberg, F. Raymond (Francis Raymond), 1908 -1993 (1962)

Fall 1934, inventory grade count - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.C. Robbins, 1934)

Fall, 1953 - wholesale price list - spring, 1954 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Exeter Wild Flower Gardens, 1953)

Fall, 1954 - wholesale price list - spring, 1955 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Exeter Wild Flower Gardens, 1954)

Fall, 1954 - wholesale trade list - spring, 1955 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Exeter Wild Flower Gardens, 1954)

Fall, 1955 - wholesale trade list - spring, 1956 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Exeter Wild Flower Gardens, 1955)

Fall 1957 - Spring 1958 wholesale trade list : of hardy native lilies, orchids, ferns, aquatic and bog plants, wild flowers, deciduous trees, shrubs, and evergreens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Exeter Wild Flower Gardens, 1957)

Fall 1959, spring 1960, wholesale trade list : of hardy native lilies, orchids, ferns, aquatic and bog plants, wild flowers, deciduous trees, shrubs, and evergreens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Exeter Wild Flower Gardens, 1959)

Fall 1960, spring 1961, wholesale trade list : of hardy native lilies, orchids, ferns, aquatic and bog plants, wild flowers, deciduous trees, shrubs, and evergreens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Exeter Wild Flower Gardens, 1960)

Fall 1961, spring 1962, wholesale trade list : of hardy native lilies, orchids, ferns, aquatic and bog plants, wild flowers, deciduous trees, shrubs, and evergreens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Exeter Wild Flower Gardens, 1961)

Fauna och flora : populär tidskrift för biologi - Naturhistoriska riksmuseet (Sweden) (Almqvist & Wiksells, 1914)

Fauna och flora : populär tidskrift för biologi - Naturhistoriska riksmuseet (Sweden) (Almqvist & Wiksells, 1915)

Fauna och flora : populär tidskrift för biologi - Naturhistoriska riksmuseet (Sweden) (Almqvist & Wiksells, 1918)

Faune de Madagascar : diptères. 22, Insectes - Grjébine, Alexis 1918 -1988 (1966)

The Fern bulletin - Clute, Willard Nelson, 1869 -1950 (W. N. Clute & Co, 1903)

The Fern bulletin - Clute, Willard Nelson, 1869 -1950 (W. N. Clute & Co, 1906)

The Fern bulletin - Clute, Willard Nelson, 1869 -1950 (W. N. Clute & Co, 1907)