00433cam a2200157   4500008004100000020002200041100001700063245004900080260004700129300002500176500002000201650002700221003000100248005001700249040000900266                                          a8170002028 (hbk.)1 aSingh, Sewa.00aColon classification  practice/cSewa Singh.  aNew Delhi :bEss Ess Publications ,c1996.  aix, 269 p. ;c22 cm.  aIncludes index. 0aClassification, Colon.20230123134253.0  cNUST