00283nam a2200109 a 450000500170000002000150001708200160003210000210004824500410006926000420011030000210015220251203110909.0  a8170004713  a025.43bRAN  aRanganathan, S.R  aPhilosophy of library classification  aNew DelhibEss Ess Publicationsc1973  a133p.c22 cm. HB