McBride, Sandra L. Delimitation of a cryptic Eocene tectonothermal domain in the eastern Cordillera of the Bolivian Andes through K-Ar dating and 40 Ar-39 Ar step-heating - London Geological Society of London March 1987 - pp. 243-255 ISSN: 0016-7649 Subjects--Topical Terms: EDADES RADIOMETRICASPETROGRAFÍA Subjects--Geographic Terms: ANDESBOLIVIACORDILLERA ORIENTAL