Forster,Colin <br/><br/>
Economic opportunity and white American fertility ratios, 1800-1860 / 
Colin Forster, and G.S.L.Tucker 
 - New Haven :  Yale University Press ,  1972 
 - ix, 121p.:  22 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertility<br/>Whites
<br/><br/><label>Dewey Class. No.: </label>312.1   / US FOR