Description
Item Description:Previously classed: I 19.151: and I 28.135/2:
Paper subscription available from: U.S. Geological Survey, Minerals Information Publications Services, 984 National Center, Reston VA 20192.
Title varies slightly.
Imprint varies: Washington, D.C., 19 -Nov. 1995; Reston, Va., Dec. 1995-
Distributed to depository libraries in microfiche, <Oct. 1987-June 1995>
Not distributed to depository libraries in a physical form, <1996->
Description based on: Oct. 1987; title from caption.
Title from caption.
Description based on: Mar. 1988.
Physical Description:volumes : illustrations ; 28 cm.
Publication Frequency:Monthly
ISSN:0191-4391.