Holland, John L. <br/><br/>
The psychology of vocational choice :  a theory of personality typ es and model environments / 
John L. Holland 
 - Toronto :  Blaisdell Publishing Co.,  c1966 
 - ix, 132 p. ;  20 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology
<br/><br/><label>Dewey Class. No.: </label>150