OSD Sanjay Mishra said, "There's an organisation the professor of which did research which states ducks aerate when they swim which cleans water surface. They're biological aerators."
from Zee News :India National https://ift.tt/2P9SsZm
Wednesday, August 29, 2018
Scientist, OSD to Tripura CM Biplab Deb support his `ducks raise oxygen level` controversial statement
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