TY  - BOOK
AU  - Darton,Nelson Horatio
TI  - Catalogue and index of contributions to North American geology, 1732-1891,
T2  - U.S. Geological survey. Bulletin
AV  - QE75 .B9 no. 127
PY  - 1896///
CY  - Washington
PB  - Gov't print. off.
KW  - Geology
KW  - North America
KW  - Bibliography
ER  -