State Of The Environment In Southern Africa A Report By The Southern African Research And Documentation Centre In Collaboration With Iucn The World Conservation Union And The Southern African Development Community Andrea Booth Et Al 

 -  Harare Zimbabwe : Sardc : Iucn Regional Office For Southern Africa Maseru Lesotho : Sadc Environment And Land Management Sector Coordination Unit 1994. 
 - 332 
<br/><br/><br/>Eng