TY  - BOOK
AU  - White,I.D.
AU  - Mottershead,D.N.
AU  - Harrison,S.John
TI  - Environmental systems: an introductory text 
SN  - 0045510652 (pbk.)
U1  - 551 23
PY  - 1984///
CY  - London, Boston
PB  - G. Allen & Unwin
KW  - Physical geography
KW  - Natural history
N1  - Includes index; Bibliography: p. 476-482
ER  -