Vallejo, Cristian F. Particulate organic matter analyses and oil potential of the Napo group, sub-Andean zone, Ecuador - Paris IRD 2002 - pp. 661-664 ilus. Subjects--Topical Terms: MATERIA ORGANICARECURSOS PETROLIFEROS Subjects--Geographic Terms: ECUADOR Subjects--Index Terms: CUENCA ORIENTE GRUPO NAPO