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Systematics of North American Petasites (Asteraceae: Senecioneae). I. Morphometric analyses
Cherniawsky, Donna M, Bayer, Randall JVolume:
76
Journal:
Canadian Journal of Botany
DOI:
10.1139/b97-152
Date:
January, 1998
File:
PDF, 247 KB
1998