Naba Fatima, Muhammad Usama and Rabia Ikram 2026. RETHINKING THE NATURE OF KNOWLEDGE: A CRITICAL ANALYSIS OF BERTRAND RUSSELL’S THE PROBLEMS OF PHILOSOPHY. JOURNAL OF SOCIAL RESEARCH DEVELOPMENT. 7, 1 (Mar. 2026), 181–198. DOI:https://doi.org/10.59075/jsrd.v7i1.567.