Forster, Colin Tucker, G S L <br/><br/>
Economic opportunity and white American fertility ratios 1800 -1860 

 - New Haven  Yale university press  1972 
 - ix,121p.; 22cm. 
<br/><br/><label>ISBN: </label>300014783 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertility - United States