The New Encyclopædia Britannica: L-ZEncyclopædia Britannica, 1992 - 32 pages |
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Page 87
... SAHARA Bu Craa EL - DJOUR BESERT -20 ° Nouadhibou Dakar Akjoujt Zouîrât Fderik ADRAR Mount jil : 915 MAURITANIA Tidjikdja Nouakchott Sénég SENEGAL THE GAMBIA Tindouf EL EGLAB MASSIF ERG CHECH Jaoudenni Béchar Kenadsa Reggane Biskra ...
... SAHARA Bu Craa EL - DJOUR BESERT -20 ° Nouadhibou Dakar Akjoujt Zouîrât Fderik ADRAR Mount jil : 915 MAURITANIA Tidjikdja Nouakchott Sénég SENEGAL THE GAMBIA Tindouf EL EGLAB MASSIF ERG CHECH Jaoudenni Béchar Kenadsa Reggane Biskra ...
Page 88
... Sahara was established as a climatic desert approximately five million years ago , during the Early Pliocene Epoch . Since the Pliocene , the Sahara has been subject to short- to medium - term oscillations of drier and more humid ...
... Sahara was established as a climatic desert approximately five million years ago , during the Early Pliocene Epoch . Since the Pliocene , the Sahara has been subject to short- to medium - term oscillations of drier and more humid ...
Page 89
... Sahara almost 7,000 years ago . The cattle - herding groups of the Ténéré region of Niger are believed to have been either ancestral Berbers or ancestral Zaghawa ; sheep and goats were apparently introduced by groups associated with the ...
... Sahara almost 7,000 years ago . The cattle - herding groups of the Ténéré region of Niger are believed to have been either ancestral Berbers or ancestral Zaghawa ; sheep and goats were apparently introduced by groups associated with the ...
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20th century Abelian group addition aesthetic Afghanistan agriculture Albania alcohol algae algebra animals basin called central centre ceremonial climate coast common complex numbers Congo contains Côte d'Ivoire countries crops cultivation culture dance defined desert developed drinking drug East eastern economic Egypt elements equations European example farm feet field Figure finite fish forest functor Igbo important Indians integers irrigation isomorphism Kabul Kenya Lake Lake Chad Lake Victoria land language lattice Lie algebra linear major mapping miles modern mountains Niger Nigeria Nile northern operations patterns percent period Plains plants Plateau polynomial population rainfall real numbers region ring ritual River Sahara savanna social soil South Africa southern Africa species subgroup Sudan Tanzania theory tion traditional tribes tropical United valley vector space vegetation village West Africa western x₁ Yoruba Zaire Zambia Zimbabwe