TY  - BOOK
AU  -  Pollio Howard R.
TI  - Psychology of symbolic activity
SN  - 0201058510
U1  - 401.9 
PY  - 1974///
CY  - Reading
PB  - Addison-wesley Publishing
KW  - Sign Language
KW  - Symbolism
KW  - Language
N2  -  Language, Symbolism, Sign Language
ER  -