The international phosphate resource data base
Subtitle: development and maintenance
By: by Nancy J. Bridges ; United States Department of the Interior, Geological Survey
Contributors: Geological Survey (U.S.)
Series: Open-file report -- 83-490; Open-file report (Geological Survey (U.S.)) -- 83-490
Publisher: The Survey
Published: 1983
Place of publication: [Reston, Va.?]
Language: eng
Format: Microform
Subjects: Phosphates -- Data processing; Information storage and retrieval systems
Notes: Microfiche. [Denver, Colo. : U.S. Geological Survey, 1983?]. 1 microfiche ; 11 x 15 cm

Bibliography: p. 5