Hopf, Ludwig,  1884- <br/><br/>
Introduction to the differential equations of physics  
tr. by Walter Nef. 
 - New York :  Dover Publications,  1948. 
 - v, 154 p. ;  20 cm. 
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations.
<br/><br/><label>Dewey Class. No.: </label>517.38  / HOI 1948