TY  - BOOK
TI  - Sources and production economics of chemical products, 1973-1974. Compiled and edited by Chemical engineering
AV  - TP201 S68 1974 
PY  - 1974///
CY  - U.S.A
PB  - Mc Graw hill publications company
KW  -  
N1  - Incluye bibliografía
ER  -