http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
model of shield-strata interaction and its implications for active shield setting requirements
by Thomas M. Barczak and David C. Oyler.
Distributed to depository libraries in microfiche.
Microfiche. [Washington, D.C.] : Supt. of Docs., U.S. G.P.O., 1991. 1 microfiche.
Report of investigations (United States. Bureau of Mines) ; 9394