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The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1887)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1894)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1897)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1901)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1910)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1913)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1915)

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Propagation of wild-duck foods - McAtee, W. L. (Waldo Lee) 1883 -1962 (U.S. Dept. of Agriculture, 1917)

Proper functioning condition assessment for lentic areas - Smith, David R (U.S. Department of the Interior, Bureau of Land Management, National Operations Center, 2020)

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The protection of lawn and turf grasses, 1979-April 1991 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1991)

A provisional host-index of the fungi of the United States - Farlow, W. G. (William Gilson), 1844 -1919 (1888)

A provisional list of the parasitic fungi of Wisconsin - Davis, John Jefferson. (1914)

Pu tong di zhi xue yuan li 普通地理学原理 - Kalesnik, S. V. (Stanislav Vikentʹevich) 1901 -1977 (di zhi chu ban she 地质出版社, 1954)

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Recent distribution and life history information for bats of eastern South Dakota - Swier, Vicki J. (Museum of Texas Tech University, 2006)

A record of some of the work of the division, including extracts from correspondence and other communications - Vasey, George, 1822 -1893 (Dept. of Agriculture, Botanical Division, 1889)

A record of the fungi named by J.B. Ellis - United States. Bureau of Plant Industry, Soils,; Agricultural Engineering. (Division of Mycology and Disease Survey, Bureau of Plant Industry, Soils, and Agricultural Engineering, Agricultural Research Administration, U.S. Dept. of Agriculture, 1952)

Reevaluation of vegetational characteristics at the CERC Field Research Facility, Duck, North Carolina - Coastal Engineering Research Center (U.S.). Field Research Facility. (The Center, 1983)

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Repertorium specierum novarum regni vegetabilis (Selbstverlag des Herausgebers, 1914)

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Report intended to illustrate a map of the hydrographical basin of the upper Mississippi river - Torrey, John, 1796 -1873 (Blair and Rives, printers, 1843)

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Report of a geological survey of Wisconsin, Iowa, and Minnesota : and incidentally of a portion of Nebraska Territory : made under instructions from the United States Treasury Department - United States. General Land Office. (Lippincott, Grambo & Co, 1852)

Report of an investigation of the grasses of the arid districts of Kansas, Nebraska, and Colorado - Vasey, George, 1822 -1893 (Dept. of Agriculture, Botanical Division, 1886)

Report of an investigation of the grasses of the arid districts of Kansas, Nebraska, and Colorado - Vasey, George, 1822 -1893 (Govt. print. off, 1886)

Report of an investigation of the grasses of the arid districts of Texas, New Mexico, Arizona, Nevada, and Utah, in 1887 - Tracy, S. M. (Samuel Mills), 1847 -1920 (Govt. Print. Off, 1888)

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