Lugo, James O. <br/><br/>
Human development :  a psychological, biological, and sociological approach to the life span / 
James O. Lugo, Gerald L. Hershey ; this edition prepared by James O. Lugo. 
 - 2nd ed. 
 - New York :  MacMillan  1979. 
 - 770 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0023723203 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Developmental psychology.