Africa environment outlook 2 : our environment, our wealth. - Nairobi, Kenya : United Nations Environment Programme, c2006. - xxx, 542 p. : col. ill., col. maps ; 30 cm. ISBN: 9280726919 LCCN: 2006317253 LC Class. No.: GE160.A35 .A33 2006 / A33 2006 Dewey Class. No.: 363.70096