Bartle, Robert Gardner, <br/><br/>
Elements of integration 
[by] Robert G. Bartle. 
 - New York,  Wiley  [1966] 
 - x, 129 p.  illus. 
<br/><br/><label>Subjects--Index Terms: </label>Integration 
<br/><br/><label>Universal Decimal Class. No.: </label>517.518.12  / BAR