Balancing rocks  : : environment and development in Zimbabwe 
/ Ed. by Carlos Lopes 
. - Harare   : United Nations Development Programme (UNDP), 1996
. - 208 p.  : couv. ill.en coul.  ; 21 cm. 
<br/><br/>Bibliogr. 
<br/><br/><label>ISBN: </label>9171063943 
<br/><br/><label>Universal Decimal Class. No.: </label>614.7.