00374nam a2200109Ia 4500008004100000020001500041082002100056100002200077245008000099260007200179300001300251161229s9999    xx            000 0 und d  a9251002037  a334.683 0 DUL/OP  aDulfer, Eberhard   aOperational efficiency of agricultural cooperatives in developing countries  bFood and agriculture organization of the united nationsaRomec1977  axiv, 188