Siddiqui, Muhammad Irfanulllah creator text Pakistan Time Publisher 2020 8th ed. monographic 1016p. 9789698261566 https://www.researchgate.net/publication/310424963_Public_Health_and_Community_Medicine https://www.researchgate.net/publication/310424963_Public_Health_and_Community_Medicine 20260128043212.0