Prof. Benu Kumar Dey, co-president of Bangladesh Chemistry Association, speaks at a meet at Chattogram Press club auditorium on Wednesday on the occasion of 10th Chemistry Olympiad.

Prof. Benu Kumar Dey, co-president of Bangladesh Chemistry Association, speaks at a meet at Chattogram Press club auditorium on Wednesday on the occasion of 10th Chemistry Olympiad.
Prof. Benu Kumar Dey, co-president of Bangladesh Chemistry Association, speaks at a meet at Chattogram Press club auditorium on Wednesday on the occasion of 10th Chemistry Olympiad.
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