Lay, Víctor Exploration and development of oil fields in the Northern Marañon Basin - Perú - Bogotá 1997 - pp. 371-393 ilus., maps. Subjects--Topical Terms: EXPLORACION DE PETROLEOGEOLOGIA DEL PETROLEO Subjects--Geographic Terms: LORETOPERU Subjects--Index Terms: CUENCA MARAÑON Universal Decimal Class. No.: R/061.3:553.98(8)/S56|25