TY  - BOOK
AU  - Williams,Michael  .
TI  - Wetlands : threatened landscape / 
T2  - The institute of British geographers special publications, 
SN  - 0631191992
U1  - 333.918 
PY  - 1990///
CY  - Oxford : 
PB  - Blackwell Publishers , 
KW  - WETLANDS-ECONOMIC ASPECTS
N1  - NULL
ER  -