TY  - BOOK
AU  - Helgren, David M.,
AU  - Sager, Robert J.
AU  - Israel, Saul
TI  - World geography today
SN  - 0030637228
AV  - G128 H45
PY  - 1985///
CY  - New York
PB  - Mexico City, Holt, rinehart and winston
KW  - Geografía
ER  -