00314nam a2200109Ia 450000500170000000800410001708200170005810000450007524500290012026000470014930000080019620260205040928.0260111s9999||||xx |||||||||||||| ||und||  a334.6  Ab82A  aAbrahamsen Martin A Scrogges Claud  L.,E 0aAgricultural cooperation  aMinneapolisbUniversity of minnesotac1957  a576