TY  - SER
ED  - Colorado School of Mines
TI  - Quarterly
PY  - 1906///-
CY  - Colorado
PB  - Colorado School of Mines
KW  - Ciencias de la tierra
N1  - v.53, n.1(1958) Bibliography of Graduate Theses on Geophysics in U.S. and Canadian Institution; v.53, n.3(1958) An Annotated Bibliography on Coal
ER  -