एब्बेविलियन (Abbevillian) उपकरण उद्योग, जो प्रारंभिक हस्तकुठार (handaxe) परंपराओं की विशेषता है, मुख्य रूप से किस पुरातात्विक काल से संबंधित है?

Evidence from which historical/prehistoric period has been uncovered at the lowest levels of the Mandoli archaeological site near Nand Nagari in Delhi?

Evidences of which period have been discovered at the lowest excavation levels of the archaeological site of Bhorgarh near Narela, Delhi?