Vallejo, Cristian F. Geochronology and provenance analysis of basement and clastic cover sequences within the northern Western Cordillera, Ecuador - Paris IRD Éditions 2005 - pp. 760-762 ilus. Subjects--Topical Terms: ACRECIONEDADES RADIOMETRICASGEOCRONOLOGIAORIGENTERRENOS ALOCTONOS Subjects--Geographic Terms: ANDESCORDILLERA OCCIDENTALECUADOR Universal Decimal Class. No.: 551.2(1-928.2)/I61/6|31