Koch, A. Robert. <br/><br/>
Economic principles : growth and environment / 
A. Robert Koch. 
 -  AVI Publishing Co.  1986. 
<br/><br/>115 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics.<br/>Economic development.<br/>Land use.<br/>Supply and demand.
<br/><br/><label>LC Class. No.: </label>HB171.5  / Koc.