Simons, I.G. . <br/><br/>
Earth ,Air and Water:Resource and Environment in The Late 20th Century /  Textual Documents 
I.G.Simons. 
 - Ist ed / 
 - London :  Edward Arnold ,  1991. 
 - 254p ;  24cm. 
<br/><br/><label>ISBN: </label>0-340--52415-4 
<br/><br/><label>Subjects--Index Terms: </label>Economics G-Economics 
<br/><br/><label>Dewey Class. No.: </label>333.7  / Si 47 Ea