Sichel, Werner <br/><br/>
Basic economic concepts 
/ Werner Schel, Peter Eckstein 
. - 2nd ed. 
. - Chicago  : McNally, 1977
. - XXV-532 p.  ; 23 cm. 
<br/><br/>Index. 
<br/><br/><label>Source: </label>85805  Achat 
<br/><br/><label>Universal Decimal Class. No.: </label>330.