Black, John,  1931- <br/><br/>
Essential mathematics for economists 
J. Black, J. F. Bradley 
 - 2d ed. 
 - Chichester [Eng.]  J. Wiley  c1980 
 - x, 316 p.  ill  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics, Mathematical
<br/><br/><label>Dewey Class. No.: </label>510  / .2  / 4339