000 00271nam a2200109Ia 4500
008 201224s9999||||xx |||||||||||||| ||und||
100 _aGreen,E.J.
_94520
245 0 _aLeerning Process and Programmed Instruction
260 _aN.Y.
_bHolt
_c1962
500 _a223
942 _cBK
999 _c6135
_d6119