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Over de bevruchting der bloemen in het kempisch gedeelte van Vlaanderen - MacLeod, Julius, 1857 -1919 (Vuylsteke, 1894)

P.A. Latreille scientiarum et artium instituti Gallici ... Genera crustaceorum et insectorum : secundum ordinem naturalem in familias disposita, iconibus exemplisque plurimis explicata - Latreille, P. A. (Pierre André), 1762 -1833 (Apud Amand Knig, Bibliopolam, 1807)

Palaozoologie : Entwurf einer systematischen Darstellung der Fauna der Vorwelt - Giebel, C. (Christoph), 1820 -1881 (Nulandt'sche buchandlung (L. Garcke), 1846)

Palmer's gold medal dahlias for 1927 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Valleyfield Dahlia Gardens, 1927)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1892)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1918)

Pamphlets on forest protection (1900)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1944)

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Papers and proceedings of the Royal Society of Van Diemen's Land - Royal Society of Tasmania. (Royal Society of Van Diemen's Land, 1855)

Partial list of dahlias and gladiolus - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chas. A. Beatrice, 1929)

Patrician dahlias - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Babylon Dahlia Gardens, 1934)

Patrician dahlias - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Babylon Dahlia Gardens, 1932)

Patrician dahlias - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Babylon Dahlia Gardens, 1935)

Patrician dahlias and gladiolus : 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Babylon Dahlia Gardens, 1926)

Periculum entomologicum - Thunberg, Carl Peter, 1743 -1828 (Litteris director. Joh. Edman, 1789)

Petite faune entomologique du Canada : précédée d'un traité élémentaire d'entomologie - Provancher, L. (Léon), 1820 -1892 (C. Darveau, 1877)

Petites nouvelles entomologiques (E. Deyrolle, 1869)

Die Pflanzenfeinde aus der Klasse der Insekten. Ein nach Pflanzenfamilien geordnetes Handbuch sämmtlicher auf den einheimischen Pflanzen bisher beobachteten Insekten zum Gebrauch für Entomologen, Insektensammler, Botaniker, Land- und Forstwirthe und Gartenfreunde - Kaltenbach, J. H. (Johann Heinrich), 1807 -1876 (J. Hoffmann, 1874)

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Pilgrim dahlias : the dahlias deluxe have all the sturdy qualities and virtues of the Pilgrim fathers, and all the delicate grace and beauty of the Pilgrim mothers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. J. Reynolds, 1926)

Der Plauische Grund bei Dresden : mit Hinsicht auf Naturgeschichte und schöne Gartenkunst - Darnstedt, Johann Adolph, 1769 -1844 (In der Frauenholzischen Kunsthandlung, 1799)

Poachers and poaching - Wilson, John, ca 1575 -ca 1645? (Chapman and Hall, 1891)

Popular British entomology : containing a familiar and technical description of the insects most common to the various localities of the British Isles - Catlow, Maria E. (Reeve, Benham, and Reeve, 1848)

Popular British entomology; containing a familiar and technical description of the insects most common to the localities of the British Isles - Catlow, Maria E. (Reeve and Co, 1852)

Popular British entomology : containing a familiar and technical description of the insects most common to the various localities of the British Isles - Catlow, Maria E. (Routledge, Wayne, & Routledge, 1860)

Précis des caractères génériques des insectes, disposés dans un ordre naturel - Latreille, P. A. (Pierre André), 1762 -1833 (Prèvôt; [etc., etc, 1796)

A preliminary list of the insects of the Province of Quebec part III : Coleoptera - Chagnon, Gustave, 1871 -1966 (s.n.], 1917)

Preliminary report of the United States Geological Survey of Montana, and portions of adjacent territories : being a fifth annual report of progress - Geological; Geographical Survey of the Territories (U.S.) (Govt. Print. Off, 1872)

Price list : 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Excell Dahlia Gardens, 1928)

Price list of choice dahlias : "dahlias of the better kind" - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Glad-Dahlia Gardens, 1927)

Price list of choice dahlias : "dahlias of the better kind" - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Glad-Dahlia Gardens, 1929)

Price list of dahlias and gladiolus - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chas. A. Beatrice, 1928)

Price list of dahlias for 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Alex. Waldie, 1926)

Price list of gladioli and dahlias - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (D.W. Peckham, 1930)

Price list of gladiolus, 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (D.W. Peckham, 1931)

Price list of new creations [dahlias] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Castlewood Dahlia Farm (Incorporated), 1926)

Price list, season 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Atlantic Nursery Co, 1932)

Prices for 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lund's Dahlia Gardens, 1932)

Primæ Lineæ cognitionis insectorum - Schluga, Johann Baptist. (Impensis Joannis Pauli Kraus, 1767)

Prize winning dahlias : grown in New Jersey - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fenwick Gardens, 1926)

Prize winning dahlias : grown in New Jersey - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fenwick Gardens, 1927)

Prize winning dahlias : grown in New Jersey - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fenwick Gardens, 1928)

Prize winning dahlias : grown in New Jersey : 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fenwick Gardens, 1929)

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