000 00309pam a2200121a 44500
082 _a371.33
_bL971t
100 _aLumsdaine, A. A.
245 1 _aTEACHING MACHINES AND PROGRAMMED LEARNING
260 _aU. S. A.
_bNational Education Association
_c1960
300 _a724
964 _gCIRC
997 _a57217 C
999 _c423523
_d423523