Freedman, Robert W. <br/><br/>
Use of vacutainers for collection of mine atmosphere samples / 
by Robert W. Freedman, William G. Humphrey, and Robert L. Craft. 
 - [Washington] :  U.S. Dept. of the Interior, Bureau of Mines,  [1975]. 
 - 7 p. :  ill. 
 - Report of investigations ;  7999 .
 - United States.  Bureau of Mines.  Report of investigations ;  7999 .
 - Report of investigations (United States. Bureau of Mines) ;  7999 .
<br/><br/><label>LCCN: </label>91055170     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mine gases--Safety measures.