00286nam a2200109   4500020001800000082001400018084002500032100001400057245003000071250001800101260005700119  a9789393168306  a660.6 SIN  2Colon Classification  aSingh B D  aBiotechnology/cB D Singh  aSixth Edition  aNew Delhi:bScientific International Pvt Ltd;c2024.