TY  - BOOK
AU  - Siemens,Alfred H.
TI  - The Americas a comparative introduction to geography
SN  - 0878721282
PY  - 1977///
CY  - North Scituate, Mass.
PB  - Duxbury Press
KW  - Geology
KW  - North America
N1  - Includes bibliographies and index
ER  -