01148cam a22003137a 450000500170000000800410001701000100005801100100006803500100007809000100008810000330009824501080013126000410023930000110028050000120029150201020030359000370040559000410044259000410048359000410052459000420056565000420060765000420064965000420069165000430073390100070077694900340078399900170081720220329141222.0971010s1986            r     00010     d  a64567  a65539  a72457  aTesis00aMellink Bijtel, Eric.974370 0aSome ecological characteristics of three dry farming systems in the San Luis Potosí Plateau, México  a[Tucson, Arizona] :bEl autor,c1986  a331 p.  aD97-224  aTesis (D. Ph.) -- University of Arizona. Faculty of the Committee on Arid Lands Resource Sciences  aALEPHb10c20130110lUCH01h1353  aBATCH-UPDb10c20130110lUCH01h0823  aBATCH-UPDb10c20130410lUCH01h0501  aBATCH-UPDb10c20130914lUCH01h0319  aCONVERSIONb10c20130109lUCH01h133514aAgriculturaxRegiones áridas.9178114aAgriculturaxSan Luis Potosí.9179014aAgriculturaxSan Luis Potosí.9179014aRegiones áridasxAgricultura.995670  aBK  bZAcTESd-5163eTS1i72457si  c64567d64567