Emerson, David <br/><br/>
Methods of gas analysis 

 - U. S. Geological Survey Professional paper, 1570 .
<br/><br/>bibliogr. p. 713-714 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gaz<br/>Air<br/>Spectrométrie masse<br/>Chromatographie