TY  - BOOK
T1  - The optimistic life
A1  - Marden, Orison Swett 1848-1924
PP  - New York
PB  - Marden, Orison Swett
YR  - 1907
UL  - http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/dun.47207
OP  - 316
ER  -