Perennials in your garden - Canada. Agriculture Canada (Agriculture Canada, 1983)

Perennials, rock plants, cut flowers, seedling annuals, bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hildemere Gardens, 1940)

Perennials, rock plants, cut flowers, seedling annuals, bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hildemere Gardens, 1939)

Perennials, rock plants, cut flowers, seedling annuals, bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hildemere Gardens, 1941)

Perennials, rock plants, flowering shrubs, evergreens, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gray & Cole, 1929)

Perennials, rock-plants, roses, shrubs, evergreens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Turner Bros. Nursery, 1935)

Perennials, rock-plants, roses, shrubs, evergreens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (William Turner's Sons, 1934)

Perennials, rock-plants, shrubs, evergreens, roses - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Turner Bros. Nursery, 1938)

Perennials, rock-plants, shrubs, evergreens, roses, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Turner Bros. Nursery, 1936)

Perennials, rock-plants, shrubs, evergreens, roses, 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Turner Bros. Nursery, 1937)

Perry Seed Company, 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Perry Seed Company, 1931)

Perry Seed Company, 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Perry Seed Company, 1932)

Perry Seed Company, successors to Fiske Seed Company : 1930 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Perry Seed Company, 1930)

Petrie Landscape Nurseries : roses, evergreens, shrubs, fruit stocks, vines, trees - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Petrie Landscape Nurseries, 1959)

Pflanzenbiologische Untersuchungen : nebst algologischen Schluszbemerkungen - Hansgirg, Antonin, 1854 -1917 (Alfred Hölder, 1904)

Philadelphia flower & garden show - Pennsylvania Horticultural Society. (The Society, 1976)

Philadelphia flower show - Pennsylvania Horticultural Society. (The Society, 1969)

Philadelphia flower show - Pennsylvania Horticultural Society. (The Society, 1970)

Philadelphia flower show - Pennsylvania Horticultural Society. (The Society, 1993)

Philadelphia flower show - Pennsylvania Horticultural Society. (The Society, 1995)

Philadelphia flower show - Pennsylvania Horticultural Society. (The Society, 1997)

PHS news - Pennsylvania Horticultural Society. (The Society, 1965)

PHS news - Pennsylvania Horticultural Society. (The Society, 1990)

PHS news - Pennsylvania Horticultural Society. (The Society, 1991)

PHS news - Pennsylvania Horticultural Society. (The Society, 1993)

PHS news - Pennsylvania Horticultural Society. (The Society, 1994)

PHS news - Pennsylvania Horticultural Society. (The Society, 1992)

PHS news - Pennsylvania Horticultural Society. (The Society, 1995)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1957)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1961)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1959)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1972)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1975)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1986)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1991)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1992)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1995)

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

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1997)

Phytoneuron (Guy L. Nesom, 2010)

Phytoneuron (Guy L. Nesom, 2014)

Planning and planting service by Turner Bros. Nursery, West Long Branch, N.J - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (William Turner's Sons, 1939)

Plant a victory garden this year, 1943 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Powell Seed Store, 1943)

Plant catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Charles Fiore Nurseries, 1940)

Plant culture; a working handbook of every day practice for all who grow flowering and ornamental plants in the garden and greenhouse - Hottes, Alfred Carl, 1891 -1955 (A. T. De La Mare Co., Inc, 1921)

Plant culture; a working handbook of every day practice for all who grow flowering and ornamental plants in the garden and greenhouse - Hottes, Alfred Carl, 1891 -1955 (A. T. De La Mare co., inc, 1921)

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 Form - Bell, Adrian D. (OXFORD UNIVERSITY PRESS, 1991)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1923)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1934)

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

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1958)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1967)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1969)

Plant list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.N. Roberson Co, 1952)

Plant list, 1948-49 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.N. Roberson Co, 1948)

Plant list of Village Hill Nursery : border, bedding, rock, alpine, herbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Village Hill Nursery, 1935)

Plant materials : 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.V. Lawrence Inc, 1924)

Plant materials, 1925 : a catalogue of description and prices - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.V. Lawrence Inc, 1925)

Plant materials, 1926 : a catalogue of description and prices - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.V. Lawrence, 1926)

Plant names, scientific and popular, including in the case of each plant the correct botanical name in accordance with the reformed nomenclature, together with botanical and popular synonyms ... - Lyons, A. B. (Albert Brown), 1841 -1926 (Nelson, Baker & Co, 1900)

Plantarum rariorum horti caesarei Schoenbrunnensis descriptiones et icones - Jacquin, Nikolaus Joseph, Freiherr von, 1727 -1817 (Apud C. F. Wappler, 1797)

Plantarum vascularium genera :secundum ordines naturales digesta eorumque differentiae et affinitates tabulis diagnostacis expositae - Weidmann. (Libraria Weidmannia, 1836)

Plantas Hartwegianas :imprimis mexicanas adjectis nonnullis Grahamianis enumerat novasque - Bentham, George, 1800 -1884 ([G. Pamplin,], 1839)

Plantes alpines & vivaces, 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H. Correvon & Fils, 1933)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1947)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1948)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1949)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1953)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1958)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1959)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1961)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1962)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1965)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1968)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1969)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1975)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1976)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1977)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1978)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1980)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1981)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1984)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1985)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1986)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1988)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1989)