TY - BOOK AU - Porter,H.K. ED - Society for Experimental Biology, Symposium, TI - The biological action of growth substances U1 - 574.1 PY - 1957/// CY - Cambridge PB - Published for the of Biologists on Behalf of the Society for Experimental Biology At the University Press KW - Growth (Biology) N1 - Includes bibliographical references and index ER -