Kuczma, Marek. <br/><br/>
Functional equations in a single variable / 
Marek Kuczma. 
 - Warszawa :  PWN-Polish Scientific Publishers,  1968. 
 - 383 p. : 
<br/><br/> On spine: Functional equations. 
<br/><br/><label>ISBN: </label>ISBNSc1366 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Functional analysis.
<br/><br/><label>Dewey Class. No.: </label>515.7  / Fu