Pollution control guidelines:Metal crushers 

 - Central Environmental  Authority  Colombo  1997 
 - Standardss Sri Lanka Wastes Occupational  Health Metal Crushers 
 - Pollution control guidelines  No11 .
<br/><br/><label>Nat. Bib. No.: </label>P 2612 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>577.4(026)(548.7)POL 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology
<br/><br/><label>Universal Decimal Class. No.: </label>577.4(026)(548.7)  1