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*[http://4hazara.blogspot.com/ 4th Hazara Mountain Battery] blogspot4hazara.com<br>*[http://en.wikipedia.org/wiki/24th_Hazara_Mountain_Battery_(Frontier_Force) 24th Hazara Mountain Battery (Frontier Force)] Wikipedia<br>*[http://www.king-emperor.com/article1.htm Indian Army Mountain Artillery] www.king-emperor.com===Historical books online===*[http://dli.serc.iisc.ernet.in/handle/2015/278775 ''Historical Record Of No 4 (Hazara) Mountain Battery Punjab Frontier Force''] [by W. J. Honner] 1888. Pdf download, Digital Library of India