Elton, G R, ed Hollingsworth, T H <br/><br/>
Historical demography 

 - Cambridge  Cambridge university press  1969 
 - 448 p.; 21cm. 
 - The sources of history: studies in the uses of historical evidence .
<br/><br/><label>ISBN: </label>521291542 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Closed population<br/>Demographic research<br/>Demography<br/>Population<br/>Population counts