00486nam a2200193 a 450000100080000000500110000800800410001902000180006010000160007824500650009426000330015930000110019265000160020365000100021965000130022965000190024265000140026170000170027510026672014-02-22       1993    bl uuuu     u00u1 u    #d  a0-582-05692-61 aWEISCHET,W.  aThe persisting ecological contraints of tropical agriculture  aNew York (US): Longmanc1993  a319 p.  aAGRICULTURA  aCLIMA  aECOLOGIA  aMEDIO AMBIENTE  aRADIACION1 aCAVIEDES, C.