Title Multi-base loop abacus

Published Oadby, Leicester : Invicta Plastics, [1970?]

Copies

Location	Call no.	Vol.	Availability
MELB CRC	513.2 Inv/Mbl JUMBO		AVAILABLE

Description 1 abacus : plastic, col. Subject Mathematics -- Study and teaching (Primary) Arithmetic -- Study and teaching (Primary) Author Invicta Plastics

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