00266nam a2200097Ia 4500008004100000082002200041100002100063245003200084260004400116300000800160140113s9999    xx            000 0 und d  a632.9:632.51   K1  a"Klingman, G.C."  aWeed control : As a science  a1973bWiley-Eastern Pvt.Ltd.cNew Delhi  a421