TY  - BOOK
AU  - Middleton,Jefferson
TI  - Clay-working industries silica brick, and building operations in the larger cities in 1918
T2  - Mineral Resources of the United States, 1918-Part II
U1  - 552.5 
PY  - 1920///
CY  - Washington, D.C.
PB  - Government Printing Office
KW  - MINERIA
KW  - ARCILLA
KW  - LADRILLO
KW  - INDUSTRIAS ARCILLOSAS
N1  - Impreso
N2  - Las industrias arcillas de ladrillo de sílice, y las operaciones de construcción en las grandes ciudades
ER  -