TY  - BOOK
T1  - Day schools vs. institutions for the deaf
A1  - Upshall, C C
PP  - New York
PB  - Columbia University
YR  - 1929
UL  - http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/dun.65112
OP  - 104
NO  - A detailled analysis of certain variations in the abilities, environment, and habits of deaf pupils, with an evaluation of their effect on educational achievement
ER  -