00438nam a2200157 a 450000500170000002000150001708200200003210000160005211000180006824500480008626000250013430000290015963000340018863000380022263000200026020251203091530.0  a8170001501  a025.435016bSEW  aSingh, Sewa  aSukhbir Singh  aColon classificationba select bibliography  aDelhibEss Essc1992  axviii, 86 p.c22 cm.bPB  aLibrary Classification, Colon  aColon Classification-Bibliography  aLibrary science