00372    a2200121   4500082001500000100002200015245004400037260005000081300002100131650001900152650003600171650004300207  a571.8bWEA  aWeaver, Robert J.  aPlant growth substances in agriculture   aNew DelhibS. Chand & Company Ltdc1972g1972  axiii,594p.c25cm  aTissue culture  aPhysiology and related subjects  aTissue biology and regional physiology