TY  - HOUR
T1  - Marketable phosphate rock.
CY  - Washington, D.C. :
CN  - I 28.119/3:
PB  - U.S. Dept. of the Interior, Bureau of Mines,
PP  - Washington, D.C. :
N1  - Imprint varies: Washington, D.C., 19 -<Oct. 1995>; Reston, Va., <Dec. 1995- >
N1  - Distributed to depository libraries in microfiche, 1987-<June 1995>
N1  - Not distributed to depository libraries in a physical form, <1996- >
N1  - Description based on: June 1987; title from caption.
ID  - 139931
KW  - Phosphate rock
TI  - Marketable phosphate rock.
LK  - http://purl.access.gpo.gov/GPO/LPS2074
LK  - http://minerals.usgs.gov/minerals/pubs/commodity/phosphate%5Frock/
UR  - http://purl.access.gpo.gov/GPO/LPS2074
UR  - http://minerals.usgs.gov/minerals/pubs/commodity/phosphate%5Frock/
ER  -