Diccionario de abreviaturas Índice alfabético Buscar a b c d e f g h i j k l m n ñ o p q r s t u v w x y z Índice alfabético Buscar Input word or term which you are interested. UPE UPFE UPG UPM UPN UPPD UPV UPZ UR URD URE URJ URT URV USAID USAL USC USCR USDA USDE USE USG USGS USO USP USPM UT UTB UTCC UTECO UTEG UTM UTS UTT UTTE UVI UVR