TY  - BOOK
AU  - Ridley,B.K.
TI  - The physical environment
SN  - 0470267453 (Halsted) :
AV  - QE28 .R52 1979
U1  - 550 
PY  - 1979///
CY  - Chicester, Eng., New York
PB  - Ellis Horwood, Halsted Press
KW  - Earth sciences
KW  - Astronomy
N1  - Includes bibliographies and index
ER  -