Gray Ruth A <br/><br/>
Bibliography of research studies in education 1937-1938 
United States Department of the Interior 
 - Washington, USA  U.S. Government Printing Office   1940 
 - xv,398p. 
<br/><br/><label>Source: </label>Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bibliographies