TY  - BOOK
AU  - Spencer, Edgar Winston 
TI  - Geologic maps: a practical guide to the interpretation and preparation of geologic maps for geologists, geographers, engineers, and planners
SN  - 24147400
PY  - 1993///
CY  - New York
PB  - Macmillan
KW  - Geologic MappingGeology-maps
ER  -