Marketable phosphate rock ... crop year.

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Bibliographic Details
Previous Title:	Phosphate rock. Crop year annual
Corporate Authors:	United States. Branch of Industrial Minerals, United States. Bureau of Mines. Branch of Data Collection and Coordination, Geological Survey (U.S.)
Other title:	Vols. for <1999-> have title: Marketable phosphate rock. Phosphate rock, crop year.
Format:	Government Document Serial
Language:	English
Published:	Washington, DC : U.S. Dept. of the Interior, Bureau of Mines, 1993-
Series:	Mineral industry surveys.
Subjects:	Phosphate rock > United States > Periodicals. Phosphate rock. United States. Periodicals.