"Levallois technology" . "Levalloisian" . . "tortoise" . "discoidal reduction" . "Levalloiso" . . "tortoise cores" . . . . "Levallois blanks" . "Levallois flints" . "Levallois technique" . "Levallois points" . "Levallois" . "non-levallois technique" . "Levallois (prepared core) techniques" . "Levallois method" . "Levallois production technique" . "Levallois-type" . . "levallois" . "Levallois point" . "Levalloise" . "Levallosian" . "levallois cores" . "Levallois technique" .