TY  - STD
PY  - 1918
DA  - 1918/1930/
TI  - Cooperative mining series
PB  - Schnepp & Barnes
CY  - Urbana, Ill.
LA  - Undetermined language
N1  - State of Illinois, Department of Registration and Education, Division of the State Geological Survey
ID  - 130734365
ER  -