TY  - BOOK
AU  - Johnston, R. J.
TI  - Environmental problems : : nature, economy and state 
SN  - 1852931884
AV  - TD17 .J6
PY  - 1989///
CY  - London
PB  - Belhaven Press
KW  - Environmental Technology
N1  - includes index and bibliographical references
ER  -