Pratap Singh S, Shivram B. Economic Gain or Social Concern: The British Opium Policy in the Punjab Hill States, 1890-1940. summerhill [Internet]. 2026Jan.7 [cited 2026Jan.20];31(1):63-71. Available from: http://14.139.58.200/ojs/index.php/summerhill/article/view/1751