000 00252nam a2200121Ia 4500
100 _aWaller, Willard
942 _cBK
654 _a
245 _aSociology of teaching
260 _aNew York
_bJohn Wiley
_c1967
082 _a370.193
300 _a16467
999 _c405149
_d405149
041 _aeng