Ruspini, Elissabetta. <br/><br/>
Introduction to longitudinal research / 
Elissabetta Ruspini. 
 - New York :  Routledge,  2002 
 - xii, 204 p. :  ill. ;  22 cm. 
 - Social research today .
 - Social research today (Routledge (Firm)). .
<br/><br/>Includes bibiliographical references and index 
<br/><br/><label>ISBN: </label>0415260078  RM426.40 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research--Methodology.<br/>Social sciences--Longitudinal studies.