A Systematic Study of the Genus Tetrachyron (Asteraceae: Heliantheae)
James R. Wussow and Lowell E. UrbatschVolume:
4
Language:
english
Journal:
Systematic Botany
DOI:
10.2307/2418807
Date:
January, 1979
File:
PDF, 3.04 MB
english, 1979