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No references found			Ryan Gibbon of the University of Witwatersrand in Johannesburg and his colleagues dated hand axes and related stone implements, collectively known as Acheulean artifacts, using measures of the relative decay of radioactive forms of aluminum and beryllium in quartz from the soil and gravel bearing the artifacts. Simultaneous Stone Age tool use: signs of early hand-ax making not ... by Bower, Bruce / Science News Gibbon and his colleagues dated hand axes and related stone implements, collectively known as Acheulean artifacts, using measures of the relative decay of radioactive forms of aluminium and beryllium in quartz grains from the soil and gravel bearing the artifacts. Hand axes were made 1.6 million years ago, twice as long ago as ... by Asian News International Ferrel Acheulean Publishing PO Box 6166, Rock Island, IL 61204 0972968423, $14. Common Sense by Small Press Bookwatch			achalasia achalasia of the cardia Achan Achard, Franz Karl Acharian, Rachiia Acharian, Rachiia Akopovich Achates Achbor ache Acheampong, Ignatius Kutu acheb Achebe Achebe, Chinua Achelous Achelous River Achene Achenwall, Gottfried Achernar Acheron Acheson Acheson, Dean Acheson, Dean Gooderham Acheson, Edward Acheson, Edward Goodrich Acheson, Lila Bell Acheulean Acheulean industry Acheulean Stage Acheulian achiasmate achievement age achievement quotient achilary Achill Achill Island Achille Claude Debussy Achille Francois Bazaine Achille François Bazaine Achille Mario Dogliotti Achillea Achilles Achilles and Patroclus Achilles group Achilles jerk Achilles Painter Achilles tendon Achilles tendon reflex Achilles' spear Achilles' tendon Achim, Andras Achinese			aches aches aches aches aches ACHESA Acheson Acheson Acheson (disambiguation) Acheson (disambiguation) Acheson Doyle Partners Acheson process Acheson, Dean Acheson, Dean Acheson, Dean (Gooderham) Acheson, Dean (Gooderham) Acheson, Dean Gooderham Acheson, Dean Gooderham Acheson, Edward Acheson, Edward Goodrich Acheson, Lila Bell ACHET Acheta Acheta Acheta assimilis Acheta domestica Acheta domesticus Acheter Acheter Acheteur Acheulean Acheulean handaxe Acheulean Industry Acheulean Stage Acheulean Tool Kit Acheulian Acheulian Acheulian Tool Kit achey ACHF ACHFH ACHG ACHHR ACHHRP Achi Achia achiasmate Achicar el margen ACHICHU achier achiest achievability achievable achievable Achievable Data Rate Achievance achieve achieve achieve

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