Betts, David S. <br/><br/>
Refrigeration and thermometry below One Kelvin 
D. S. Betts 
 - X, 283 S.  Ill., graph. Darst. 
 - Graduate student series in physics .
<br/><br/><label>ISBN: </label>0844808539 0856210285 
<br/><br/><label>Dewey Class. No.: </label>536.56