Johnson, William Woolsey . <br/><br/>
A Treaties on Differential Equation /  Textual Documents 
William Woolsey Johnson. 
 - New York :  John Wiley ,  1913. 
 - 368p. :  In 2 M ;  23 cm . 
<br/><br/><label>ISBN: </label> HB 
<br/><br/><label>Subjects--Index Terms: </label>T/G--Matahaematics Differential Equations 
<br/><br/><label>Dewey Class. No.: </label>517.38  / J 639 T