"Dececco, john p. "
Educational technology: readings in programmed instruction/ john.p. dececco - 1 ed. - usa : holt rinehart and winston 1964. - "xiv, 479p.; 21 cm."
LB1028. / 3.D43 1964
Educational technology: readings in programmed instruction/ john.p. dececco - 1 ed. - usa : holt rinehart and winston 1964. - "xiv, 479p.; 21 cm."
LB1028. / 3.D43 1964