Seed potato certification notes

Autor: Godwin, C. H., Fredericton, N. B., Coney, Worth G., Barrus, M. F., Valentine, G. G., Bailey, Harold L.
Zdroj: American Journal of Potato Research; November 1924, Vol. 1 Issue: 13 p305-310, 6p
Databáze: Supplemental Index
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