"harris, n d. "
Preparing educational materials: / N.D. Harris - 1 ed. - uk : croom helm 1979. - ", 153p.; 22 cm."
includes bibliography
0-85664-932-5 hard cover
teaching - aids and devices
371. 307 8 har
Preparing educational materials: / N.D. Harris - 1 ed. - uk : croom helm 1979. - ", 153p.; 22 cm."
includes bibliography
0-85664-932-5 hard cover
teaching - aids and devices
371. 307 8 har