TY  - BOOK
AU  - Williams, Lawrence.
TI  - Rivers and valleys: the changing earth 
SN  - 0602226643
U1  - 551.483 WIL 
PY  - 1986///
CY  - Aylesbury
PB  - Ginn and Company Ltd.
KW  - Rivers and valleys
N1  - Includes index
ER  -