000 00255 a2200121 4500
080 _a578
_bG 133 M
245 1 _aMicroscope
_cby S.H. Gage
250 _a17th rev. edn.
260 _c1941
650 _aMicroscope
100 1 _aGage, S.H.
_d
901 _a13794
999 _c33481
_d33481