TY  - BOOK
AU  - Hitchcock,Edward
TI  - Illustrations of surface geology
T2  - Smithsonian contributions to knowledge
AV  - Q11 .S68 vol. 9
PY  - 1857///]
CY  - [Washington
PB  - Smithsonian Institution
KW  - Physical geography
KW  - Connecticut River Valley
KW  - Erosion
KW  - Glacial epoch
N1  - pt. I. On surface geology, especially that of the Connecticut Valley in New England.--pt. II. On the erosions of the earth's surface, especially by rivers.--pt. III. Traces of ancient glaciers in Massachusetts and Vermont
ER  -