Affiliation:
1. George Washington University; Washington, D. C.
Subject
Plant Science,Genetics,Ecology, Evolution, Behavior and Systematics
Reference23 articles.
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4. Die Stickstaffnahrung der Gramineen;Caron;Landw. Versuchs-Stat.,1923
5. The data of geochemistry;Clarke;U. S. Geol. Surv. Bull.,1920
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