United States. Department of Interior, Bureau of Mines [ Hooker, A.B. ; Ilsley, L.C. ; & Roadstrum, W.H.] - Investigations of Permissible Electric Mine Lamps 1930-40Washington, D.C. Government Printing Office, 1942. orig.wrappers. 23x15cm, 50 pp. Series: United States. Department of Interior, Bureau of Mines, Bulletin 441.. Textual photo illustrations.. Rubberstamps to covers. VG. USD 35.00 [Appr.: EURO 30.5 | £UK 26.25 | JP¥ 5184] Book number BOOKS023147Iis offered by:
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