Title from HTML title screen last updated May 14, 2009 (viewed Oct. 26, 2012).
Use copy Restrictions unspecified MiAaHDL star
Issued in 3 or more v.
Electronic reproduction. [S.l.] : HathiTrust Digital Library, 2010. MiAaHDL
Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002. http://purl.oclc.org/DLF/benchrepro0212 MiAaHDL
Issued by: Bureau of Mines, 1932/33-<1993>; by: U.S. Dept. of the Interior, U.S. Geological Survey, <1995->
digitized 2010 HathiTrust Digital Library committed to preserve MiAaHDL pda