00449nam a2200145Ia 4500008004100000082002000041100002000061245003000081260004200111300001000153650001300163942000700176952010300183999001700286140113s9999 xx 000 0 und d a631(047.1 M1.34 a" Brady, N. C." aAdvances in agronomy v.34 b"New York : Academic Press Inc, 1981" a485p. aAgronomy cBK 00104070aKYMbKYMd2014-01-13l0o631(047.1 M1.34pKBK2790r2014-01-13 00:00:00w2014-01-13yBK c63605d63605