00319nam a2200109Ia 4500008004100000082003900041100002300080245003400103260002700137600001700164650002800181140224s9999 xx 000 0 und d a581.135(100) 1982.7.12/16 (063) M2 aWareing, P.F., ed. aPlant growth substances, 1982 aLondonbAcademicc1982 aP.F. Wareing aPhysiology,Plant growth