O' Rourke, Joseph Patrick,  1928- <br/><br/>
Toward a science of vocabulary development / 
Joseph Patrick O' Rourke 
 - The Hague :  Mouton,  1974 
 - 136 p. :  ill. ;  23 cm. 
<br/><br/> Includes index 
<br/><br/>Bibliography: p. 123-130 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children--Language<br/>Vocabulary<br/>Language and languages--Word frequency
<br/><br/><label>Dewey Class. No.: </label>410