00440nam a22001577a 4500003000400000005001700004008004100021020001500062040000800077082002300085100002100108245005100129260004400180300001100224650004700235OSt20161021153726.0030206s2002    ck            000 0 spa d  a0309019486  cOSt04221a631.4613bS655  aSissors, Jack Z.00aSoils of the humid tropics / cJack Z. Sissors  aWashington:  bNational Academy,c1972.  a219 p.042LEMBxAGRICULTURAxSUELOSxFISICA AGRICOLA