Elementary differential equations text manual: the simplest approach 
Tolentino, Romeo Q. 
 -  Booklore Publishing Corporation.  2012 
 - 103 pages 
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<br/><br/><label>ISBN: </label>978-9-71817186-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Boundary value problems.
<br/><br/><label>Dewey Class. No.: </label>F 515.35 T6497 2012