When was the ESI (Employee's State Insurance) Act enacted?

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E6 Comprehensive Textbook of Community Health Nursing for BSc Nursing Students Part 2 — Subpart B (pp 276-535 of 550) p. 61-63
E6 Parks TextBook of Preventive & Social Medicine part 2 — Subpart B (pp 233-449 of 464) p. 133-135
E6 Nursing Fundamentals Taylor p. 46-48
Practise the full Punjab CHO - 2021
Attempt every question from this paper in a timed mock, then review the full solution for each one.