Mandela N. Nelson Mandela’s Speech To The International Geographical Union On The Occasion Of The Presentation Ofthe Planet And Humanity Award (Durban, 4 August 2(02). BSGI [Internet]. 2003 Dec. 31 [cited 2026 Oct. 13];:317-22. Available from: https://www.bsgi.it/index.php/bsgi/article/view/6934