TY  - BOOK
T1  - Geosystems an introduction to physical geography.
A1  - Christopherson, Robert W.
LA  - English
PP  - New York
PB  - Macmillan
YR  - 1992
UL  - https://tuklas.up.edu.ph/Record/UP-99796217607932120
NO  - Includes bibliographical references and index
CN  - GB 54.5 C475 1992
SN  - 0023224436
KW  - Physical geography.
ER  -