search terms in context | full text File Size: 666 K bytes | Add this to my bookbag

 
Fieldner, Arno C. Howard I. Smith, Albert H. Fay, and Samuel Sanford. Analyses of Mine and Car Samples of Coal Collected in the Fiscal Years 1911 to 1913, no. 85. Washington, D.C.: Government Printing Office, August 1914