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Speech delivered at Nagpur University Convocation on 5th December 1936, "Educational Speeches" by Dr. Shyamaprasad Mookerjee, A.Mukherjee & Co. (Private) Ltd., 2 College Square, Kolkata 700 012, 1959.
Pitirim Aleksandrovich Sorokin (2002). “The Ways and Power of Love: Types, Factors, and Techniques of Moral Transformation”, p.12, Templeton Foundation Press