01268nas a22003257a 450000500170000000800410001701000100005801100100006802200140007803000110009203500100010321000170011324500250013026000480015530000180020331000120022136200180023353000550025165000460030678000570035278000550040985600870046486600610055186600310061286600600064386600600070386600590076386600590082286600610088120231010062644.0001017c1976    nl mr pernn   0   b1eng d  a86124  a87096  a0308-521X  aAGSYD5  a976370 aAgric. syst.00aAgricultural systems  aBarking :bElsevier Applied Science,c1976-  av.;bgráfs.  aMensual0 av.1 n. 1 1976  aA partir del v. 87 n.1, 2006 disponible en línea17aAgriculturaxPublicaciones periódicas205tAgricultural administration and extensionx0269-747505tResearch and development in agriculturex0264-5467  3Finding aiduhttp://www.sciencedirect.com/science/journal/0308521X/90zTeclea aqui  av. 102 n. 1 (October 2009) - v. 102 n. 2 (November 2009)  av. 103 n. 1 (January 2010)  av. 56 n. 1 (January 1998) - v. 66 n. 3 (September 2000)  av. 71 n. 1 (January 2002) - v. 81 n. 3 (September 2004)  av. 82 n. 1 (October 2004) - v. 82 n. 3 (December 2004)  av. 87 n. 1 (January 2006) - v. 95 n. 3 (December 2007)  av. 99 n. 1 (January 2009) - v. 101 n. 3 (September 2009)