4th International report on the prevention and suppression of dust i n mining, tunnelling and quarrying.   

 - Geneva :   International Labour Office,   1970. 
 - ix, 73. :    ill. ;    24 cm. 
 - Occupational safety and health series ;   no. 24. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mine dusts--Diseases------<br/>Miners --Dust diseases------<br/>Lungs --------<br/>Mine dusts.--------<br/>Mining engineering.--------<br/>Miners.--------<br/>Quarries and quarrying.--------