Sources of Wastewater | Composition of Sewage | Variation in Sewage Flow and Flow Quantity

[@fireandsafetywithshubham5767]

Sir aapka telegram whatsapp group hai kya

[@fireandsafetywithshubham5767]

Hoga to hame add kr updates ke liye

[@savenviron1524]

No... please press on the bell 🔔 icon to get new updates..if you want ani pdf then drop your mail id in the comment section.

[@heartbeep4598]

SIR AWAJ PROPER NHI ARAHA

[@savenviron1524]

please use headphones