000 00351nam a2200145Ia 4500
001 5995
008 240324s9999 xx 000 0 eng
082 _a535.2
_bR O I
100 _aJohn K. Robertson
245 0 _aIntroduction to optics geometrical
250 _a4
260 _aPrenceton
_bD. van Nostrand
_c1954
300 _a416
999 _c6759
_d6759