TY  - BOOK
AU  - Balazik,Ronald F.
TI  - Costs and effects of environmental protection controls regulating U.S. phosphate rock mining
T2  - Information circular
U1  - 622 s 
PY  - 1983///
CY  - [Washington, D.C.]
PB  - U.S. Dept. of the Interior, Bureau of Mines
KW  - Phosphate industry
KW  - United States
KW  - Costs
KW  - Environmental aspects
ER  -