00565nam a2200169 a 450000500170000002000150001708200210003210000170005324501050007026000350017530000180021069000530022896400190028199700120030099900170031295200660032920251203091940.0  a8185427488  a025.431,bD, Raj  aRaju, A.A.N.  aDewey decimal classification (DDC 20): Theory and practice a practical and self instructional Manual  aMadrasbT.R.Publicationsc1995  a286p.c24 cm.  aDewey Decimal classification theory and Practice  bEngcdefg_  a74827 C  c58527d58527  00104070aPUbPUd1998-04-09l0o025.431, D, Rajp74827yBK