00520nam a22002057a 4500 196004 196004 OSt 9789386200082 543.24 NID/CH Nidheesh, P V Chemistry of volumetric: water quality analysis New Delhi Satish Serial Publishing House 2017 ix, 80p. English Chemical oxygen demand Hardness Dissolved oxygen Hardness Safety in lab ddc BK 0 0 ddc 0 0 Gen KAUCLV KAUCLV GENERAL 2021-07-06 1250.00 0 543.24 NID/CH 231263 2021-07-06 00:00:00 BK