Smith, T. Lynn  1903- <br/><br/>
Demography: principles and methods / 
T. Lynn Smith, Paul E. Zopf. 
 - Port Washington, N.Y. :  Alfred Publishing,  1976. 
 - xvii, 615 p. :  ill., maps. 
<br/><br/><label>ISBN: </label>0882840339 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Demography.