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COMPILATION OF FEDERAL AND STATE SEED LAWS
W. O. WHITCOMB, R. H. Porter, C. W. Leggatt and C. M. BassVolume:
29
Year:
1937
Language:
english
Journal:
Proceedings of the Association of Official Seed Analysts of North America
DOI:
10.2307/23430870
File:
PDF, 1.32 MB
english, 1937