Standards for the classification of public coal lands

Main Author: Bass, N. Wood 1893-1979,
Other Authors: Horn, George H. 1917-, Smith, H. L., Geological Survey (U.S.),
Format: eBook
Language: English
Published: [Washington, D.C.] : U.S. Department of the Interior, [Geological Survey], [1970]
Physical Description: 1 online resource (iii, 10 pages) : illustrations.
Series: Geological Survey circular ; 633.
Subjects:
Online Access: https://purl.fdlp.gov/GPO/gpo115075

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