TY  - BOOK
AU  - THORNBURY, WILLIAM D.
TI  - PRINCIPLES OF GEOMORPHOLOGY
T2  - 0
U1  - 551.4 
PY  - 1961///
CY  - LONDON-U.S.A.
PB  - JOHN WILEY
KW  - CIENCIAS PURAS
N1  - ANALYSIS-TOPOGRAPHY-GEOMORPHOLOGY
ER  -