TY  - BOOK
AU  - Henry, Nelson B, ed.
AU  - National society for the study of education
TI  - Teaching of arithmatic
CY  - Chicago
KW  - Education - Yearbook
KW  - Educational technology for developing countries
KW  - Modes of communication
KW  - Nature of education in a changing culture
KW  - Teaching - Yearbook
ER  -