TY  - BOOK
AU  - Burchard,Ernest F.
TI  - Cement in 1918
T2  - Mineral Resources of the United States, 1918-Part II
U1  - 553.68 
PY  - 1920///
CY  - Washington, D.C.
PB  - Government Printing Office
KW  - MINERIA
KW  - CEMENTO
N1  - Impreso
ER  -