TY  - BOOK
AU  - Heggie Ian G
AU  -  Rothenberg J Ed.
ED  - Conference on Urbanisation and Environment (1972 : Copenhagen)
TI  - Management of water quality and the environment 
U1  - "X:(G:55)p1,N72, L4" 
PY  - 1974///
CY  - London
PB  - Macmillan U. K.     
KW  - Environmental Economics
ER  -