000 00288nam a22001097a 4500
082 0 _a531
100 1 _aParker, George W.
245 1 0 _aElements of optics
_cGeorge W. Parker
260 _aLondon :
_bLongmans Green and Company,
_c1921.
300 _aix, 270p. ;
_c22 cm.
650 4 _aMechanics
999 _c395172
_d395108