00367nam a2200109Ia 4500008004100000082004500041100002100086245007000107260004200177300001000219650002800229140113s9999    xx            000 0 und d  a632.95+631.811.98+664:66.095.5:543  L2.6  a" Zweig, Gunter"  aAnalytical methods for pesticides and plant growth regulators v.6  b"New York : Academic Press Inc, 1972"  a765p.  aPlant growth regulators