000			00312nam a2200133 4500
082			_a370 _bHER.E
084			_2Colon Classification
100			_aHerbert, D
245			_aExperiments / _cby D Herbert
260			_aLondon : _bBell & sons Ltd., _c1966.
300			_a160p. :
650			_aEducation
942			_cBK
999			_c684627 _d684627