Curtiss D.R. <br/><br/>
Mathematical monographs. Vol. I. 
Curtiss D.R., ed. 
 - Evanston-Chicago  Northwestern University  1941 
 - 179 p. 
<br/><br/> Northwestern University studies in Mathematics and Physical sciences. N 1 
<br/><br/><label>Dewey Class. No.: </label>517