12701Ciencia y tecnologia (Caribe)PT1996-09-03 10:46:00BT19558Ciencia y tecnologia (America)PTBT344CentroamericaPTBT5885CaribePTNT28572Biologia (Caribe)PTNT28327Ciencia y tecnologia (Haiti)PTNT22545Medicina (Caribe)PTNT34781Nuevas tecnologias (Caribe)PT