TY  - BOOK
T1  - Mineral resource research and activities of the State Geological Survey, 1950-1951 /
DA  - 1951.
CY  - Urbana,
AU  - Leighton, Morris M.
VL  - no. 175
CN  - QE105
CN  - QE105
PP  - Urbana,
PY  - 1951.
N1  - "Preprinted from the annual report of the Chief to the Director, Dept. of Registration and Education, for fiscal year 1950-1951."
ID  - 6404
KW  - Geological surveys
KW  - Mines and mineral resources
TI  - Mineral resource research and activities of the State Geological Survey, 1950-1951 /
ER  -