The botany of Ephedra in relation to the yield of physiologically active substances / by G. Weidman Groff and Guy W. Clark.
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Format: | Book |
Language: | English |
Published: |
Berkeley, Calif. :
University of California press,
1928.
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Series: | University of California publications in botany ;
v. 14, no. 7. |
Subjects: |