Trindade, Luiz A.F. Petroleum systems of the Piedemonte Oriental, Cusiana-Apiay area, Colombia - Bogotá 1997 - pp. 303-323 ilus. Subjects--Topical Terms: BIODEGRADACIONGEOLOGIA DEL PETROLEOMADUREZ TERMAL Subjects--Geographic Terms: COLOMBIA Universal Decimal Class. No.: R/061.3:553.98(8)/S56|45