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Compositae newsletter - Naturhistoriska riksmuseet (Sweden). Dept. of Phanerogamic Botany. (Dept. of Botany, Ohio State University, 2005)

Composition and ecological significance of shrublands/grasslands immediately west of Helena Regional Airport - Montana Natural Heritage Program. ([Montana Natural Heritage Program], 1992)

Condensed catalogue, spring 1952 : with complete price list of The Fremont Nursery - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Fremont Nursery, 1952)

Conference report / Botanical Society of the British Isles - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1968)

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Congrès international d'entomologie : [proceedings] (Hayez, 1992)

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Congrès international d'entomologie : [proceedings] (Hayez, 2000)

Congrès international d'entomologie : [proceedings] (Hayez, 2008)

Congrès international d'entomologie : [proceedings] (Hayez, 2016)

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Conservation and utilisation of the plant genetic resources of Mexico and Central America: Project Progress Report - WCMC (WCMC, 1995)