Extended family is -

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E6 Parks TextBook of Preventive & Social Medicine part 2 — Subpart A (pp 1-232 of 464) p. 221-223
E6 Nursing Fundamentals Potter Perry 12e Part 1 p. 149-151
Practise the full UPPSC 2023
Attempt every question from this paper in a timed mock, then review the full solution for each one.