000 00280nam a2200121Ia 4500
008 220201s1963 xx 000 0 eng d
082 _a621
100 _aEdward.B Fry
245 0 _aTeaching machines & programming inst
260 _bNewyork
_c1963
300 _a244
942 _2ddc
999 _c74520
_d74520