"Iron beads were worn in Egypt as early as 4000 B.C., but these were of meteoric iron, evidently shaped by the rubbing process used in shaping implements of stone", quoted under the heading "Columbia Encyclopedia: Iron Age" at Iron Age, Answers.com. Also, see History of ferrous metallurgy#Meteoric iron—"Around 4000 BC small items, such as the tips of spears and ornaments, were being fashioned from iron recovered from meteorites" – attributed to R. F. Tylecote, A History of Metallurgy (2nd edition, 1992), p. 3.
Bouchneba, L.; Crevecoeur, I. (2009). "The inner ear of Nazlet Khater 2 (Upper Paleolithic, Egypt)". Journal of Human Evolution56 (3): 257–262. doi:10.1016/j.jhevol.2008.12.003. பப்மெட்:19144388.
Brooks, Nick (2006). "Cultural responses to aridity in the Middle Holocene and increased social complexity". Quaternary International151 (1): 29–49. doi:10.1016/j.quaint.2006.01.013. Bibcode: 2006QuInt.151...29B.
Brooks, Nick (2006). "Cultural responses to aridity in the Middle Holocene and increased social complexity". Quaternary International151 (1): 29–49. doi:10.1016/j.quaint.2006.01.013. Bibcode: 2006QuInt.151...29B.
Bouchneba, L.; Crevecoeur, I. (2009). "The inner ear of Nazlet Khater 2 (Upper Paleolithic, Egypt)". Journal of Human Evolution56 (3): 257–262. doi:10.1016/j.jhevol.2008.12.003. பப்மெட்:19144388.
