00249nam a2200097Ia 4500008004100000082002000041100003400061245002800095260002000123300000800143140113s9999    xx            000 0 und d  a631.62/.67   M6  a"Doorenbos,J. & Kassam, A.H."  aYield Response to Water  a1996bFAOcRome  a193