Não informado. (1925). Proceedings of the International Seed Testing Association. International Seed Testing Association.
Chicago-referens (17:e uppl.)Não informado. Proceedings of the International Seed Testing Association. Vollebekk, Noruega: International Seed Testing Association, 1925.
MLA-referens (8:e uppl.)Não informado. Proceedings of the International Seed Testing Association. International Seed Testing Association, 1925.
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