Ruspini Elisabetta <br/><br/>
Introduction to longitudinal reseach 
Ruspini Elisabetta 
 - London  Routledge Published           2002 
 - xv,204p  cm. 
 - Social Research Today .
<br/><br/> Bibliography : P184-200; Appendix : P 138-183 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>Yb4, P2