Preliminary geochemical study of ash-flow tuffs in the Morococala and Los Frailes volcanic fields, central Bolivian tin belt
By: by George E. Ericksen ... [et al.]
Contributors: Ericksen, George Edward; Geological Survey (U.S.)
Series: Open-file report -- 85-258; U.S. Geological Survey open-file report -- 85-258
Publisher: Dept. of the Interior, U.S. Geological Survey
Published: 1985
Place of publication: [Reston, Va.?]
Language: eng
Format: Microform
Subjects: Geochemistry -- Bolivia; Volcanic ash, tuff, etc. -- Bolivia
Notes: Distributed to depository libraries in microfiche

Bibliography: leaf 8

Microfiche. [Denver, Colo. : U.S. Geological Survey, 1985]. 1 microfiche ; 11 x 15 cm