The protection of small grains, other than wheat, rice, or sorghums, 1979-April 1990 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1990)

The protection of sugarcane and sugar beets, January 1979-February 1988 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1988)

The protection of wheat, January 1980 - December 1984 : citations from Agricola concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1985)

The protection of wheat, January 1985-February 1989 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1989)

The protein element in nutrition - McCay, David, 1873 - (Arnold, 1912)

The protein element in nutrition - McCay, David, 1873 - (E. Arnold, 1912)

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)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 2012)

pu yang zhi wu zhi - Zhang, Junpu, Wu Hongchen, Zhu Xuewen & Ma Yipin (zhong guo ke xue ji shu chu ban she, 1996)

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[Publications on plant pathology from Cornell Agricultural Experiment Station Memoirs, collected by H.S. Jackson.] - Jackson, H. S. (Herbert Spencer), 1883 -1951 (Cornell University], 1915)

[Publications on plant pathology from Wisconsin Experiment Station Research bulletins, collected by H.S. Jackson.] - Wisconsin. Agricultural Experiment Station, Madison (1911)

qing dao zhong zi zhi wu ming lu - Chen, Zhuo. (shan dong da xue xue bao er juan si qi)

qing hai jing ji zhi wu zhi 青海经济植物志 - Guo, Benzhao (郭本兆) (qing hai ren min chu ban she青海人民出版社, 1987)

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Quarterly summary of re-identifications, July, August, September 1962 : Summary No. 10 - United States. Bureau of Plant Industry, (New Crops Research Branch, Plant Industry Station, 1960)

Quarterly summary of re-identifications, October, November, December 1962 : Summary No. 11 - United States. Bureau of Plant Industry, (New Crops Research Branch, Plant Industry Station, 1960)

The Queensland flora - Bailey, Frederick Manson 1827 -1915 (Printed by H. J. Diddams & co, 1902)

The races of man and their geographical distribution - Pickering, Charles, 1805 -1878 (Printed by C. Sherman, 1848)

Rad - Jugoslavenska akademija znanosti i umjetnosti. Razred za prirodne nauke. (Jugoslavenska akademija znanosti i umjetnosti, 1876)

Radiation biology - Hollaender, Alexander, 1898 - (McGraw-Hill, 1954)

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Résultats scientifiques du Congrès international de botanique, Vienne 1905 = Wissenschaftliche Ergebnisse des Internationalen botanischen Kongresses, Wien 1905 - Lotsy, Johannes Paulus, 1867 -1931 (G. Fischer, 1906)

Révision des champignons, tant supérieurs qu'inférieurs trouvés jusqu'à ce jour dans les Pays-Bas - Oudemans, C. A. J. A. (Cornelis Antoon Jan Abraham), 1825 -1906 (J. Mller, 1892)

Real Sociedad Española de Historia Natural. Tomo extraordinario publicado con motivo del 50. aniversario de su fundación, 1921 - Sociedad Española de Historia Natural. (Museo Nacional de Ciencias Naturales, 1921)

Recent advances in cytology - Darlington, C. D. (Cyril Dean), 1903 - (P. Blakiston's son & co., inc, 1937)

Recherches anatomiques et physiologique sur le Tradescantia virginica L. Au point de vue de l'organisation générale des monocotylées et du type commélinées en particulier - Gravis, Auguste, 1857 - (Hayez, 1898)

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Le Règne végétal; divisé en: Traité de botanique, Flore médicale, usuelle et industrielle, Horticulture théorique et pratique, Plantes agricoles et forestières, Histoire biographique et bibliographique de la botanique - Réveil, O. (Oscar), 1821 -1865 (L. Guérin, 1870)

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Reise in den äussersten Norden und Osten Sibiriens während der Jahre 1843 und 1844 mit Allerhöchster Genehmigung auf Veranstaltung der Kaiserlichen Akademie der Wissenschaften zu St. Petersburg ausgeführt und in Verbindung mit vielen Gelehrten - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia) (Buchdr. der K. Akademie der Wissenschaften : Zu haben bei Eggers, 1867)

The relation of pheasants to agriculture in the Yellowstone and Big Horn River valleys of Montana - Hiatt, Robert W. (Montana State Fish and Game Commission, Wildlife Restoration Division, 1947)

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Répertoire alphabétique des principales localités mentionnées dans le Compendium et le Conspectus floræ atlanticæ, avec deux cartes botaniques de l'Algérie et des notices sur ces cartes - Cosson, E. (Ernest), 1819 -1889 (G. Masson, 1882)

Repertorium specierum novarum regni vegetabilis (Selbstverlag des Herausgebers, 1912)

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