00340nam a2200133Ia 450000500170000008000180001710000210003524500650005626000270012130000100014858300190015894200120017799900170018920260716043138.0  a07.07.02 H565  aHerrera, Danielo  aEl comercio interregional de granos basicos en Centroamerica  bIICAaSan JoseCRc1992  a168p.  c3/7/00kM2LMGR  cMmH565  c41258d41258