TY  - BOOK
AU  - United Nations Economic and Social Affairs
ED  - United Nations Economic and Social Affairs
TI  - Appropriate technologies in civil engineering work in developing countries
U1  - "X9(D1).1(X).N7, L6" 
PY  - 1976///
CY  - New
PB  - York United Nations USA    
KW  - Engneering
ER  -