'Kolkata air healthy for very short time in a year'
According to Rajeev Sharma, Resource Conservation Specialist, Embassy of the US, New Delhi, there is a very short window when the air quality in Kolkata is at its best.
Sep 16, 2016, 09:19 AM IST
According to Rajeev Sharma, Resource Conservation Specialist, Embassy of the US, New Delhi, there is a very short window when the air quality in Kolkata is at its best.
Sep 16, 2016, 09:19 AM IST