Ford, Lester, R, <br/><br/>
Differential Equations  Textual Documents 
Ford, Lester, R 
 - 2nd. 
 - New York:  McGraw-Hill Book Company,Inc,  1955. 
 - X,263p. 
<br/><br/><label>Subjects--Index Terms: </label>Symbolic Method,Linear Equations,Integrating Factor,Convergence,Legendre Polynomials