Simmons I.G <br/><br/>
Earth, Air and Water:  Resources and Environment in the late 20th century/ 
by Simmons I.G 
 - USA  Routledge chapman and hall inc:  c1991 
 - 255p.:  ill.: 
<br/><br/> includes index 
<br/><br/><label>ISBN: </label>0340524154 
<br/><br/><label>Source: </label>B-18212 
<br/><br/><label>LC Class. No.: </label>HD111.S55    / .S55  1991