Electronic reproduction. [S.l.] : HathiTrust Digital Library, 2011. 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
digitized 2011 HathiTrust Digital Library committed to preserve pda MiAaHDL
Online resource; title from PDF title page (USGS viewed June 16, 2017).