General mining
Subtitle: October, 1919
By: Issued by the Federal board for vocational education, Washington, D.C.
Series: U.S. Federal board for vocational education. Bulletin -- no. 38. -- Trade and industrial series -- no. 8; Bulletin -- no. 38.
Publisher: Govt. Print. Off.
Published: 1919
Place of publication: Washington
Language: eng
Number of pages: 169
Subjects: Mines and mineral resources
Notes: Prepared by A.C. Callen.--p. 7.