Maps showing natural aggregates of the conterminous United States
By: Department of the Interior, U.S. Geological Survey, William H. Langer and Donna A. Belvel
Contributors: Belval, Donna A; Geological Survey (U.S.)
Series: Open-file report -- 83-743; Open-file report (Geological Survey (U.S.)) -- 83-743
Publisher: U.S. Geological Survey
Published: 1983
Place of publication: [Reston, Va.?]
Language: eng
Format: Microform
Number of pages: 18
Subjects: Aggregates (Building materials) -- United States -- Bibliography; Aggregates (Building materials) -- United States -- Maps
Notes: Two maps depict potential sources

Microfiche. [Denver, Colo. : U.S. Geological Survey, 1984?]. 3 microfiches ; 11 x 15 cm