Work Study In Mines / 
National Coal Board 
 - London :  National Coal Board,  1979 
 - 275 p. :  ill., forms ;  22 cm 
<br/><br/> Includes Appendix 1 ( p. 270 - 274 ) 
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label>--Great Britain--Mine management
<br/><br/><label>Subjects--Geographic Terms: </label>--Work measurement
<br/><br/><label>Dewey Class. No.: </label>622.334 WOR