TY  - BOOK
AU  - Butler, B. C. M.,
AU  - Bell, John David,
TI  - Interpretation of geological maps
T2  - Longman earth science series
SN  - 0582301679
AV  - QE36 B87
PY  - 1988///
CY  - London, New York
PB  - Longman Scientific & Technical, Copublished in u. s. with j. willey
KW  - Geología
KW  - Mapas
ER  -