000 00276nam a2200121Ia 4500
008 170101s1956 xx 000 0 und d
082 _a613.1 W29N
100 _aWELCHONS, A.M.
245 0 _aNew plane geometry
260 _bBoston
_c1956
300 _avii,568p
942 _2ddc
_cB
999 _c8306
_d8306