000 00402nam a2200169 i 4500
008 991231s1984 sp g spa
020 _a8427008929
080 1 _a159.9
100 _aSKINNER, B.F.
245 0 _aWALDEN DOS
250 _a1
260 _aBARCELONA
_b:MARTINEZ ROCA
_c,1984
300 _a329
650 _aCONDUCTISM
997 _e2