Lang, Helen W. <br/><br/>
Continous monitoring of dieses exaust gas for carbon dioxide carbon monoxide oxygen methane and nitrogen oxides  
Lang, Helen W. 
 - Washington  Bureau of mines  1969 
 - Report Investigation  7241 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>monitoreo<br/>dióxido de carbono<br/>monóxido de carbono<br/>oxígeno<br/>metano<br/>motor diesel
<br/><br/><label>Universal Decimal Class. No.: </label>621.436.2:543.272.61.62+546.21+547.211 (47)