TY  - BOOK
AU  - Haslam S M
TI  - Understanding wetlands: Fen, Bog and Marsh   
SN  - 0415257948
U1  - U217:(G:5), P3 
PY  - 2003///
CY  - London
PB  - Taylor and Francis        
N1  - Bibliography: P 248-258
ER  -