00381nam a2200133Ia 4500008004100000082001600041100001900057245002900076260005400105300000800159650001600167650003700183653002700220170901s1979    xx            000 0 und d  a025.4bK97T  aKumar, Krishan 0aTheory of Classification  aNew DelhibVikas Publishing House Pvt. Ltd.c1979  a560  aGneralities  aLibrary and Information sciences  aLibrary classification