Johnson, Harold Hunt,  1929- <br/><br/>
Prolongations of differential systems/ 
by Harold Hunt Johnson. 
 -  1957. 
 - 40 leaves.: 
<br/><br/>Thesis (Ph. D. in Mathematics)--University of California, Berkeley, Sept. 1957. 
<br/><br/>Bibliography: leaf 40. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential forms.
<br/><br/><label>Dewey Class. No.: </label>515.37  / J66p