Hilal, M. A., [et. al]. <br/><br/>
Future Helium Requirements for Energy Related Applications 
by M. A. Hilal [et. al]. ed. by K. T. Hartwing 
 - Madison  Engineering Experiment Station university of wisconsin madison  1977 
 - vii, sectional 
<br/><br/><label>Dewey Class. No.: </label>621.48336  / N77