McColvin, lionel R. . <br/><br/>
Public Library Extension /  Textual Documents 
lionel R. McColvin. 
 - Ist ed / 
 -  Scientific And Cultural Organization ,  1950. 
 - 113p ;  21cm. 
<br/><br/><label>Subjects--Index Terms: </label>Library- Public Library Social Science- Library Extension T/G- Social Science 
<br/><br/><label>Dewey Class. No.: </label>027  / M 459 P