00686cam a22002177a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001400102100001800116245006700134260010000201300001000301490005500311650002500366700002200391830005500413CHAP20220817041403.0971013s1982            r     00010     d  a12977  a13949  a18022  cCHAP  a631.5bC300aCasey, Frank.12aA course in farming systems researchb: the Cornell experience  aIthaca :bCornell University ; New York :bState College of Agriculture and Life Science,c1982  a92 p. 0aCornell international agriculture mimeographv; 9314aSistemas de cultivo.0 aBarker, Randolph.0 aCornell international agriculture mimeographv; 93