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	1.	No cover image available Modificacion de conducta : aplicaciones a la educación / Fred S. Keller, Emilio Ribes Iñesta; traducción Paulo Speller by Keller, Fred S Ribes Iñesta, Emilio Speller, Paulo, tr Series: Biblioteca técnica de psicología / dirección Rogelio Diaz-Guerrero Edition: 1 ed. Material type: Text; Format: print ; Audience: General; Language: esp Mexico : Trillas, 1975 Availability: Items available for loan: Biblioteca Central Rafael Parga Cortes (1)Call number: 155.4 k29M. Place hold Add to cart (remove)
	2.	No cover image available Tecnicas de modificacion de conducta : su aplicacion al retardo en el desarrollo / Emilio Ribes Iñesta by Ribes Iñesta, Emilio Material type: Text; Format: print ; Audience: General; Language: esp Mexico : Trillas, 1972 Availability: Items available for loan: Biblioteca Central Rafael Parga Cortes (1)Call number: 155.418 R485t. Place hold Add to cart (remove)
	3.	No cover image available Modificacion de conducta : problemas y extensiones / Sidney W. Bijou, Emilio Ribes Iñesta by Bijou, Sidney W Gonzales Aramburo, Francisco, tr Ribes Iñesta, Emilio Edition: 1 ed. Material type: Text; Format: print ; Audience: General; Language: esp Mexico : Trillas, 1972 Availability: Items available for loan: Biblioteca Central Rafael Parga Cortes (2)Call number: 155.418 B619m, ... Place hold Add to cart (remove)

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