Erdos, Renée F. <br/><br/>
Teaching by correspondence 
Renée F. Erdos. 
 - London  Paris  Longmans  Unesco  1967. 
 - iii-xvii, 218 p.  illus. (incl. forms.) maps, facsims., tables, diagrs. 
 - Unesco source books on curricula and methods, no. 3 .
<br/><br/>Bibliography: p. 213-214. 
<br/><br/><label>LCCN: </label>68071024  
<br/><br/><label>Nat. Bib. No.: </label>B67-21120 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Correspondence schools and courses
<br/><br/><label>LC Class. No.: </label>LC5915  / .E7 
<br/><br/><label>Dewey Class. No.: </label>370.7/1/54