Links and other valuable information
http://www.sheldrickwildlifetrust.org/PDF/AfricaGeographic.pdf
http://ngexplorer.cengage.com/explorer/1305/stuff.html
http://www.canon.com/environment/communication/ad/wild2009.html
https://www.mnh.si.edu/exhibits/natures-best-2010/30_LisaHoffner_Winner_Ballooning.html
http://www.nationalgeographic.com/adventure/0505/reader_photo_03.html
www.proyectotiti.com