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01258aam a22002891i 4500 001 08671180F83611E784964A6B97128E48 003 SILO 005 20180113013733 008 790501s1979 dcua b f000 0 eng d 035 $a (OCoLC)4937477 040 $a DOD $c DOD $d GPO $d MvI $d UtOrBLW $d SILO 074 $a 637-A 086 0 $a I 28.23:8337 110 1 $a United States. $b Bureau of Mines. $0 http://id.loc.gov/authorities/names/n79063444 245 10 $a Design of a compact muffler for a jumbo drill / $c by A. Visnapuu [and others]. 264 1 $a [Washington] : $b Department of the Interior, Bureau of Mines, $c 1979. 300 $a 12 pages : $b illustrations ; $c 27 cm. 490 1 $a Report of investigations - Bureau of Mines ; 8337 504 $a Bibliography: page 12. 650 0 $a Rock-drills. $0 http://id.loc.gov/authorities/subjects/sh85114662 650 0 $a Mineral industries $x Noise control. 650 0 $a Mining machinery $x Noise. 700 1 $a Visnapuu, A. $q (Aarne) $0 http://id.loc.gov/authorities/names/n79070867 810 1 $a United States. $b Bureau of Mines. $t Report of investigations - Bureau of Mines ; $v 8337. 941 $a 1 952 $l OVUX522 $d 20180116063047.0 956 $a http://locator.silo.lib.ia.us/search.cgi?index_0=id&term_0=08671180F83611E784964A6B97128E48Initiate Another SILO Locator Search