TY  - BOOK
AU  - United Nations. Economic and Social Affairs (Department of ....)
ED  - United Nations. Economic and Social Affairs (Department of ....)
TI  - Human settlements :  The environmental challenge   
U1  - X:(G:55).1(X), L4 
PY  - 1974///
CY  - London
PB  - Macmillan U. K.        
KW  - Environmental Economics-International
ER  -