Glenn, Norval D. <br/><br/>
Cohort analysis 
by Norval D. Glenn 
 - Beverly Hills  Sage  1977 
 - 72p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences - mathmatical modles
<br/><br/><label>Dewey Class. No.: </label>B0651 Q25/5