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Chapter 9 Chapter 10 - NCERT

Chapter 9 Chapter 10 - NCERT

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pools, cesspools and tanks and observing standard practices of hygiene in public catering. These measures are particularly essential where the infectious agents are transmitted through food and water such as typhoid, amoebiasis and ascariasis. In cases of air-borne diseases such as pneumonia and common cold, in addition to the above measures ...

  Ncert, Cesspools

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