Ergonomic-human factors in mining. Proceedings Bureau of mines Technology Transfer Seminars, Pittsburgh, Pa., December 3, 1981, St. Louis, Mo, December 10, 1981, and Denver, Colo., December 15, 1981 
U.S. Bureau of mines. 
 - Washington  Bureau of mines.  1981 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA<br/>ERGONOMIA
<br/><br/><label>Universal Decimal Class. No.: </label>622:65.015.11