Plantevæxten paa Færøerne : med sæerlig hensyntagen til blomsterplanterne - Ostenfeld, C. H. (Carl Hansen), 1873 -1931 (Gyldendal, 1906)

Plantkundig woordenboek voor Nederlandsch Indië : met korte aanwijzingen van het geneeskundig- en huishoudelijk gebruik der planten, en vermelding der verschillende inlandsche wetenschappelijke benamingen - Filet, G. J., 1825 -1891 (J.H. de Bussy, 1888)

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Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1963)

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

Plants and bulbs : wholesale price list, fall 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Good & Reese Co, 1934)

Plants and bulbs : wholesale price list, fall 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Good & Reese, Inc, 1936)

Plants in the Royal Botanical Gardens - Prestoe, Henry. (Scientific Association of Trinidad, 1869)

Plants of Riding Mountain National Park, Manitoba - Canadian Parks Service. (Research Branch, Agriculture Canada, 1988)

The plants of Southern New Jersey; with especial reference to the flora of the Pine Barrens and the geographic distribution of the species - Stone, Witmer. 1866 -1939 (1911)

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Plants of the Seven Devils Mountains of Idaho : an annotated checklist - Intermountain Forest; Range Experiment Station (Ogden, Utah) (U.S. Dept. of Agriculture, Forest Service, Intermountain Research Station, 1987)

Plants of Yellowstone National Park - McDougall, W. B. (Walter Byron), 1883 - (U.S. Govt. Print. Off, 1936)

Pleasure and beauty from a water garden - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Loveland Goldfish Farm, 1933)

Pollen and spore morphology/plant taxonomy; gymnospermae, pteriodophyta, bryophyta (Illustrations) - Erdtman, G. (Gunnar), 1897 -1973 (Almqvist & Wiksell, 1957)

Pollen and spores of Barro Colorado Island - Roubik, David W. (David Ward), 1951 - (Missouri Botanical Garden, 1991)

Popular botany; the living plant from seed to fruit - Step, Edward, 1855 -1931 (H. Holt and company, 1913)

A popular history of the British ferns and the allied plants, : comprising the club-mosses, pepperworts, and horsetails - Moore, Thomas, 1821 -1887 (Routledge, Warne, & Routledge, 1859)

A popular history of the British ferns, and the allied plants, comprising the club-mosses, pepperworts, and horsetails - Moore, Thomas, 1821 -1887 (Routledge, Warne & Routladge, 1862)

A popular history of the British ferns and the allied plants : comprising the club-mosses, pepperworts and horsetails - Moore, Thomas, 1821 -1887 (Lovell Reeve, 1855)

A popular history of the British ferns and the allied plants, comprising the club-mosses, pepperworts, and horsetails - Moore, Thomas, 1821 -1887 (Routledge, Warne, & Routledge, 1859)

Popular science news, formerly Boston journal of chemistry. A popular illustrated monthly devoted to the progress in zoology, botany, mineralogy, archaeology, hygiene, invention, with related physical sciences and general scientific information - Agassiz Association. (J.R. Nichols & co. [etc.], 1866)

Postelsia : the year book of the Minnesota Seaside Station - Minnesota Seaside Station. (Pioneer Press, 1906)

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A practical course in botany : with especial reference to its bearings on agriculture, economics, and sanitation - Lloyd, Francis Ernest, 1868 -1947 (American Book Company, 1911)

A practical course in botany, with especial reference to its bearings on agriculture, economics, and sanitation - Lloyd, Francis Ernest, 1868 -1947 (American book company, 1911)

A practical guide to garden plants, containing descriptions of the hardiest and most beautiful annuals and biennials, hardy herbaceous and bulbous perennials, hardy water and bog plants, flowering and ornamental trees and shrubs, conifers; hardy ferns; hardy bamboos and other ornamental grasses. Also the best kinds of fruits and vegetables that may be grown in the open air in the British Isles with full and practical instruction as to culture and propagation - Weathers, John, 1867 -1928 (Longmans, Green, 1901)

Practical plant biology; a course of elementary lectures on the general morphology and physiology of plants - Dixon, Henry Horatio, 1869 - (Longmans, Green and co, 1922)

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Preliminary report on the forest and other vegetation of Pegu - Kurz, Wilhelm Sulpiz, 1834 -1878 (Lewis, 1875)

A preliminary verified list of plant collectors in Mexico - Knobloch, Irving W. (Irving William), 1907 - (Harold N. Moldenke and Alma L. Moldenke, 1983)

Price list - California Nursery Co. (The Nursery, 1915)

Price list - California Nursery Co. (The Nursery, 1916)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Terrarium Gardens, 1935)

Price list of fruit and ornamental trees, small fruits, evergreens, roses, etc., of the California Nursery Co - California Nursery Co. (The Nursery, 1915)

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Principles of comparative physiology - Carpenter, William Benjamin, 1813 -1885 (John Churchill, 1854)

Principles of modern biology - Marsland, Douglas, 1899 - (Holt, Rinehart and Winston, 1899)

The principles of plant-teratology - Worsdell, Wilson Crosfield (The Ray Society, 1915)

The problem of Krakatao as seen by a botanist - Backer, C. A. (Cornelis Andries), 1874 -1963 (The author, 1900)

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Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1898)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1865)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1882)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1885)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1902)