Opuscula philolichenum (J. Lendemer, 2022)

The orchids in the Ottawa District : floristics, phytogeography, population studies and historical review / Joyce M. Reddoch and Allan H. Reddoch - Ottawa Field-Naturalists' Club (The Ottawa Field-Naturalists' Club, 1997)

Ornamental plants for the home grounds : new, rare or unusual flowering shrubs, spring list, 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Shumaker's Birchmont Gardens, 1941)

Ornamental trees, shrubs, vines and perennial plants, flowering bulbs, roses, fruit trees, small fruits, landscape service - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (James J. McManmon, 1916)

Ornithological science - Nihon Chogakkai (Ornithological Society of Japan, 2002)

Outdoor beauty for your home [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Call's Nurseries, 1930)

Outdoor beauty for your home [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Call's Nurseries, 1929)

Pacific science - University of Hawaii. (University Press of Hawaii, 1964)

Pacific science - University of Hawaii. (University Press of Hawaii, 1966)

Palisades popular perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries Inc, 1916)

Palisades popular perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries Inc, 1917)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1964)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1970)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1974)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1982)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1988)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1994)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1997)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 2000)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 2001)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1914)

A Partial bibliography of the mammals of Wyoming and adjacent states with special reference to density and habitat affinity - United States. Bureau of Land Management. (Wyoming Game & Fish Department, 1978)

Perkins-DeWilde Nurseries, Incorporated, 1958-59, wholesale only - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Perkins-DeWilde Nurseries, Incorporated, 1958)

Perkins-DeWilde Nurseries, Incorporated, 1959-60, wholesale only - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Perkins-DeWilde Nurseries, Incorporated, 1959)

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Pests not known to occur in the United States or of limited distribution. 81. European spruce beetle - Anderson, D. M. (1987)

Phytogeographic studies in the Peace and upper Liard river regions, Canada, with a catalogue of the vascular plants - Raup, Hugh M. (Hugh Miller), 1901 -1995 (Arnold Arboretum of Harvard university, 1934)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1967)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 2010)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 2012)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 2016)

Phytoneuron (Guy L. Nesom, 2015)

Pileated woodpecker habitat ecology in boreal forests : project update - Alberta. Alberta Environmental Protection. (Alberta Environmental Protection, 1996)

Pinaceae, Rutaceae, Meliaceae, Anacardiaceae, Tamaricaceae, Cornaceae, Oleaceae, Bignoniaceae of Nevada - Little, Elbert L. (Elbert Luther), 1907 -2004 (Plant Industry Station, 1956)

Pinophyta (Gymnosperms) of New York State - Cope, Edward A., 1948 - (University of the State of New York, the State Education Dept, 1990)

The pinus contorta vegetation of Banff and Jasper National Parks - University of Alberta. Department of Botany. (University of Alberta, 1969)

Plant associations of region two : potential plant communities of Wyoming, South Dakota, Nebraska, Colorado, and Kansas - Johnston, Barry C. (USDA Forest Service, Rocky Mountain Region, 1987)

Plant biomass in the Tanana River basin, Alaska - Pacific Northwest Research Station (Portland, Or.) (U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1995)

Plant bugs on fruit crops in Canada : Heteroptera: Miridae - Kelton, Leonard A. (Research Branch, Agriculture Canada, 1982)

Plant community classification of the Pakowki Sandhills and sand plains - Alberta. Alberta Sustainable Resource Development. (Geowest Environmental Consultants Ltd, 2003)

Plant community types of sand dunes and sand plains in selected areas of the boreal natural region - Alberta. Alberta Sustainable Resource Development. (The Company, 2005)

The plant disease reporter - United States. Bureau of Plant Industry. (Bureau of Plant Industry, U.S. Dept. of Agriculture, 1942)

Plant explorations : ornamentals in Italy, southern France, Spain, Portugal, England, and Scotland - Meyer, Frederick G. 1917 -2006 (U. S. Dept. of Agriculture in cooperation with Longwood Gardens of the Longwood Founcation, 1959)

Plant explorations : ornamentals in the Netherlands, West Germany, and Belgium - Meyer, Frederick G. 1917 -2006 (Agricultural Research Service, U.S. Dept. of Agriculture, 1963)

Plant hardiness zone map - United States. Agricultural Research Service. (Govt. Print. Off, 1960)

Plant health care for woody ornamentals : a professional's guide to preventing and managing environmental stresses and pests - International Society of Arboriculture. (Cooperative Extension Service, College of Agricultural, Consumer and Environmental Sciences, University of Illinois at Urbana-Champaign, 1997)

Plant introductions - United States. Office of Foreign Plant Introduction. (Office of Foreign Seed and Plant Introduction, Bureau of Plant Industry, U.S. Dept. of Agriculture, 1939)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1942)