000 00282nam a2200121Ia 4500
008 220201s1957 xx 000 0 eng d
082 _a720
_bPER
100 _aPerkins, L B
245 0 _aWork place for learning
260 _aNew York
_bReinhold
_c1957
300 _a62
942 _2ddc
999 _c13102
_d13102