Repair and Maintenance of Room No. 155 (First Floor), Department of Physics and Floor and wall Tiling Works in Lab No. 307 and Replacement of Damaged Cupboards and Other Repair Works in Lab No. 21, Chemistry Department, Multistorey Building, D.U. Repair and Maintenance of Room No. 155 (First Floor), Department of Physics and Floor and wall Tiling Works in Lab No. 307 and Replacement of Damaged Cupboards and Other Repair Works in Lab No. 21, Chemistry Department, Multistorey Building, D.U.