00307nam a2200097Ia 4500008004100000082004400041100002200085245005300107260004100160300000800201140113s9999    xx            000 0 und d  a"546.39:63""1965.9.29/30""(082.2)   K6"  a"Mc.Vickar, M.H."  aAgricultural anhydrous ammonia -Technology & Use  a1966bAmerican Soc. AgronomycU.S.A.  a314