Pearse, Harold L. Growth substance and their practical importance in horticulture - East Malling : Commonwealth Bureau of Horticulture and Plantation Crops, 1948 - 233 p. - Technical communication ; 20 . - Technical communication ; 20 . LCCN: 38274 Subjects--Topical Terms: Auxinas.Plantas--Crecimiento--Aditivos. Dewey Class. No.: 581.1341 / P4