TY  - BOOK
T1  - Walden Dos
A1  - Skinner, B.F
LA  - Spanish
PP  - Barcelona
PB  - Martínez Roca
YR  - 1987
UL  - https://colectivo.uloyola.es/Record/L18078
OP  - 329
SN  - 8427008929
ER  -