Carroll, Herbert B., Jr. <br/><br/>
Accuracy and precision of several portable gas detectors: additional studies, a supplement to RI 7811 
Carroll, Herbert B., Jr.; Armstrong, F. E. 
 - Washington  Bureau of mines  1975 
 - 34 p. 
 - RI 8010 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA<br/>MINING
<br/><br/><label>Subjects--Index Terms: </label>DETECTORES DE GAS GAS DETECTORS 
<br/><br/><label>Universal Decimal Class. No.: </label>622