Prevention of accidents due to explosions underground in Coal mines:   

 - Geneva,     1974 
 - VI, 37 P.;    18 cm 
 - Its Codes of practice ;   6 .
<br/><br/>Bibliographical footnotes 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal mines and mining --Accidents------<br/>Accidents --Prevention------