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Asiatic Pteridophyta collected by Joseph F. Rock, 1920-1924
Christensen, Carl
Date:
1931
Citation:
Christensen, Carl. 1931. "Asiatic Pteridophyta collected by Joseph F. Rock, 1920-1924." in Systematic plant studies: mainly tropical America, 265–337. Contributions from the United States National Herbarium. Washington, DC: Government Printing Office.