The Botany of ephedra in relation to the yield of physiologically active substances /
Groff, G. Weidman
The Botany of ephedra in relation to the yield of physiologically active substances / by G. Weidman Groff and Guy W. Clark - Berkeley : University of California Press, 1928 - 247-282 p. : ill. ; 24 cm - University of California publications in botany ; 14 .
The Botany of ephedra in relation to the yield of physiologically active substances / by G. Weidman Groff and Guy W. Clark - Berkeley : University of California Press, 1928 - 247-282 p. : ill. ; 24 cm - University of California publications in botany ; 14 .