000			00338nam a2200133Ia 4500
001			9185
008			170722s9999 xx 000 0 und d
100			_aIsaac, A. M.
245			_aStructure, validity and prospect of classification schemes /
260			_c1965.
653			_aClassification
653			_aLibrary Science
942			_cGEN
999			_c159982 _d159982