TY  - BOOK
AU  - LOUIS V PIRSSON & CHARLES SCHUCHERT
TI  - A TEXT BOOK OF GEOLOGY
U1  - GN551P669TV1 
PY  - 1915///
CY  - LONDON
PB  - JOHN WILEY & SONS, INC.
KW  - A TEXT BOOK OF GEOLOGY
N1  - USAID
ER  -