TY  - BOOK
T1  - Work and effort : the psychology of production
A1  - Ryan, Thomas Arthur
LA  - English
PP  - New York
PB  - The Ronald Press Company
YR  - 1947
UL  - http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/dfi.5209
OP  - 323
KW  - PSICOLOGIA
KW  - TRABAJO
ER  -