The orchid hybrids Second supplement Hansen, Geo. (George), 1863-1908 creator text book Berkeley, Calif Geo. Hansen 1897 1897
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ENG "Recording knowledge gained about orchid hybrids in the period from Oct. 15, 1895, to April 1, 1897." --T.p. "Issued May 1, 1897." Orchidaceae https://www.biodiversitylibrary.org/bibliography/24235 10.5962/bhl.title.24235 MOA