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Laboratory assistants from the Institute of Serology prepare to collect the sewage samples from a sewage in Shyam Lal lane in Kolkata to monitor the polio virus in urban Bengal.
- Copyright
- Sanjit Das
- Image Size
- 6000x4000 / 6.8MB
- www.sanjitdas.com
- Contained in galleries
- End of Polio

