RFWT86T4–Childrens wooden toys, a wooden abacus

RMD3C81K–Pattern of old traditional wooden soroban, or abacus, used by school students to calculate mathematic problems.

RFBE9B0H–close up of abacus

RMBXPC7F–Wooden Abacus on white background

RMA3004B–Chinese Abacus

RFEKAECF–old abacus on the vintage wooden table

RFCBGT3T–Wooden abacus isolated on white

RFE16NYH–vintage abacus isolated on white background

RFBKP5NW–Old vintage wooden abacus on white background.

RMBXRT6J–Abacus with beads to left and right

RFBCWXK6–black abacus on white

RFFFY21J–Concept , learning counting , wooden abacus

RMD4KB0D–Abacus