TY  - BOOK
AU  - Matthes,François Emile
TI  - Geologic history of the Yosemite valley,
T2  - U. S. Geological survey. Professional paper 160
AV  - QE75 .P9 no. 160
PY  - 1930///
CY  - Washington
PB  - U.S. Govt. print. off.
KW  - Geology
KW  - California
KW  - Yosemite Valley
KW  - Yosemite Valley (Calif.)
N1  - At head of title: United States Department of the Interior; Bibliography: p. 130-131
ER  -