00473nam a2200169 a 450000100080000000500110000800800410001910000240006024500480008426000740013230000090020665000160021565000130023165000160024465300220026065300210028211733501998-03-26       1981    bl uuuu      00u1 u    #d1 aMEJIA GUTIERREZ, M.  aEl piedemonte Putumayense; economia basica.  aBogota: Universidad Nacional de Colombia. Facultad de Agronomiac1981  a52p.  aagriculture  aColombia  aAgricultura  aAspecto economico  aEconomic aspects