Spraying with Plant Growth Substances to Prevent Apple Fruit Dropping

Autor:	Gardner, F. E., Marth, P. C., Batjer, L. P.
Zdroj:	Science, 1939 Sep 01. 90(2331), 208-209.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/1666882 Zobrazit plný text záznamu