TY  - BOOK
AU  - "UNITED NATIONS, INDUSTRIAL DEVELOPMENT ORGANIZATION."
ED  - "UNITED NATIONS, INDUSTRIAL DEVELOPMENT ORGANIZATION."
TI  - Manufacture of cement and sulphurie acid from calcium Sulphate
U1  - "X9(D35), L1" 
PY  - 1971///
CY  - New
PB  - York United Nations U. S. A.  
KW  - Cement Industry
ER  -