TY - BOOK T1 - Physical geography science and systems of the human environment A1 - Strahler, Alan H. A1 - Strahler, Arthur Newell 1918- LA - English PP - New York PB - Wiley YR - 1997 UL - https://ds.mainlib.upd.edu.ph/Record/UP-1685594773861497500 OP - 637 NO - Includes index. CN - GB 54.5 S78 SN - 0471112992 KW - Physical geography. ER -