Walden two /
Skinner, Burrhus Frederic 1904-1990
Walden two / B.F. Skiner - Washington, D.C. : McMillan, 1971 - 320 p. ; 18 cm.
Utopías
HX 811 / S45
Walden two / B.F. Skiner - Washington, D.C. : McMillan, 1971 - 320 p. ; 18 cm.
Utopías
HX 811 / S45