TY  - GEN
AU  - Hatano, Giyoo
AU  - Amaiwa, Shizuko
AU  - Shimizu, Keiko
TI  - Formation of a mental abacus for computation and its use as a memory device for digits
KW  - Deposito de Rectaguarda
KW  - 0220 - Depósito de Retaguarda
UR  - https://catalogo.ispa.pt/opac/biblioteca/localizacao_doc/dr.htm
ER  -