Addition and subtraction a cognitive perspective

Xehetasun bibliografikoak
Beste egile batzuk:	Carpenter, Thomas P, eds, Moser, James M., eds, Romberg, Thomas A., eds
Formatua:	Liburua
Hizkuntza:	English
Argitaratua:	Hillsdale, NJ Lawrence Earlbaum Associates c1982.
Gaiak:	Addition. Subtraction. Mathematical ability > Testing.