NASA  / TN D-6520 - <br/>
Schehl,Thomas A. <br/>
       Trace organic impurities in gaseous helium [ NASA TN D-6520] 
 / Thomas A.Schel and John F. Kennedy 
 .- Washington, D.C.: NASA,  1973 
 .- 18p. 
<br/><u>Subject Headings:</u> <br/>Organic imputrites;
<br/><U>Author Added Entry: </u><br/>Kennedy, John F.;
<br><U>Copy Details:</u><br> Acc. No.: <b>TR8614 [D-6520]</b>, Full Call No.: ,   Item type:  Technical Report , Location: COMPACT STORAGE (BASEMENT), <br><b>------------------------- --------------------- ------ --------- ------- ------- --------- -------- </b><br>