00607nam a2200229Ia 4500 156301 BIBL 20160527200459.0 811014s1979 sp 00011 spa d 8432995010 (OCoLC)07847389 30517273 CGP CGP CGP PUXA PQ6651.R384 W3 Ardila, Rubén LEMB 7952 Walden tres Rubén Ardila. 1. ed. Barcelona Ediciones Ceac 1979. 184 p. 21 cm. Biblioteca de ciencias de la conducta Local 61284 127067 127067 0 0 ddc 0 CO_863_000000000000000_AR28W 0 abl 303516 1 1 17 2016-05-27 233878 0 Co863 Ar28w 60000001933388 2016-05-27 00:00:00 r:156301 z:NCC:D 6