000			00279nam a2200097 4500
999			_c334441 _d334441
082			_a548.9 _bHAR.C
100			_aHartshorne,N.H. and Stuart,A
245			_aCrystals and the polarising microscope _cHartshorne,N.H. and Stuart,A
260			_aLondon _c1960 _bEdward Arnold
942			_cBK