TY  - BOOK
ED  - United States.
TI  - 1977 census of mineral industries: type of operation
U1  - 338.20973 
PY  - 1981///
CY  - Washington, D.C.
PB  - United States Government Printing Office
KW  - Real estate development
KW  - Construction industry
N1  - Cover title
ER  -