W.A. Hafkamp <br/><br/>
Triple layer model   a nation regional economic environmental model for the Nathelands 

 - Amsterdam<br/>  Gruner  1983 
 - 273, tables 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics 
<br/><br/><label>Dewey Class. No.: </label>333.79492  / HAF