विश्व भूगोल (Top Ten Deserts of World - विश्व के १० सबसे बड़े मरुस्थल)
Sahara Deserts-North Africa (Algeria, Chad, Egypt, Eritrea, Libya, Mali, Mauritania, Morocco,Niger, Sudan, Tunisia and Western Sahara)
Kalahari Desert-Southern Africa (Angola, Botswana, Namibia and South Africa)
