TY  - BOOK
AU  - Clifford Nicholas
AU  -  Valentine Gill
TI  - Key methods in Geography
SN  - 076197492X
U1  - U, P3 
PY  - 2003///
CY  -  New Delhi 
PB  - Sage Publications        
KW  - Geography
N1  - Bibliography chapterwise; Glossary P 551-560
ER  -