00903cam a22002657a 450000500170000000800410001701000100005801100100006803500100007808200230008811100860011124500210019726000350021830000090025359000410026259000410030359000410034459000420038565000310042765000410045871000470049990100070054694900670055399900170062020220817043045.0971010s1975            r     10010     d  a64204  a65176  a71438  a631.4063bC7p 197500aCongreso Nacional de la Ciencia del Suelo (n8d: 1975c: Saltillo, Coah.)927071 0aPrograma general  aMéxico :bLa Sociedad,c1975  a16 p  aBATCH-UPDb10c20130110lUCH01h0834  aBATCH-UPDb10c20130410lUCH01h0512  aBATCH-UPDb10c20130914lUCH01h2038  aCONVERSIONb10c20130109lUCH01h133514aSuelosxCongresos.911028114aSuelosxCongresosxMéxico.91102820 aSociedad Mexicana de la Ciencia del Suelo.  aBK  a631.4063 C7p 1975bScLIBROd-4063eLIBROfc.2h2962i71438si  c64204d64204