TY  - BOOK
N2  - "A compendium of about 1,300 geological reports, maps, and statistical summaries."
AB  - "A compendium of about 1,300 geological reports, maps, and statistical summaries."
T1  - Bibliography and index of U.S. Geological Survey publications relating to coal, 1882-1970,
DA  - 1972.
CY  - Washington,
AU  - Averitt, Paul,
AU  - Lopez, Lorreda,
VL  - 1377
CN  - QE75
CN  - QE75
PB  - U.S. Govt. Print. Off.,
PP  - Washington,
PY  - 1972.
N1  - "Supersedes Circular 86."
ID  - 121851
KW  - Coal
KW  - Coal mines and mining
TI  - Bibliography and index of U.S. Geological Survey publications relating to coal, 1882-1970,
ER  -