000 00312nam a2200133Ia 4500
008 170101s1953 xx 000 0 und d
082 _a514 B18P
100 _aBALLOU, D.H.
245 0 _aPlane and spherical trignometry
250 _a2nd ed.
260 _bBoston
_c1953
300 _avii,205+13p
942 _2ddc
_cB
999 _c8287
_d8287