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Authors whose works are in public domain in at least one jurisdiction

List of works by Richard Wettstein

Abstammungslehre, Systematik, Paläontologie, Biogeographie; ⬇️

Leipzig [etc.]B. G. Teubner, 1914.

Handbuch der Systematischen Botanik

book

Monographie der Gattung Euphrasia

Pteridophyta und Anthophyta ⬇️

Wien :K.K. Hof- und Staatsdruckerei,1908. | New York Botanical Garden, LuEsther T. Mertz Library

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