Smil, Vaclav <br/><br/>
Global ecology :  environmental change and social flexibility / 
Vaclav Smil 
 - London :  Routledge,  1993 
 - 240 p. :  ill. ;  24 cm. 
<br/><br/>Bibliography : p.217- 236 
<br/><br/><label>ISBN: </label>0415098858(hbk) 
<br/><br/><label>LCCN: </label>93-9856 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental policy<br/>Sustainable development