Fogel, Robert William. <br/><br/>
Time on the cross;  the economics of American Negro slavery, 
by Robert William Fogel and Stanley L. Engerman. 
 - [1st ed.] 
 - Boston,  Little, Brown  [1974] 
 - xviii, 286 p.  illus.  22 cm. 
<br/><br/> Supplemented by: "Evidence and methods, a supplement" (xi, 267 p. : ill. ; 22 cm.) published: Boston : Little, Brown, 1974. Call number: E449.F65 Suppl. 
<br/><br/><label>ISBN: </label>0316287008 
<br/><br/><label>LCCN: </label>73018347  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Slavery--Economic aspects--United States.<br/>Slavery--Econometric models.--United States
<br/><br/><label>LC Class. No.: </label>E449  / .F65 
<br/><br/><label>Dewey Class. No.: </label>331.1/1734/0973