The Khalsa Tract Society is an organization created by Bhai Vir Singh in 1894 to promote the aims and objects of the Singh Sabha Movement.
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。