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PREFACE
sequences and co-existences of social events and movements. History has to be put on the same level with physics and other natural sciences, so that predictions may be possible in the social world as in the physical.
My best thanks are due to Professor Radhakumud Mukerji, M.A., of the National Council of Education, Bengal, for kindly looking over the proofs.
B. K. SARKAR.
Calcutta,
June, 1911.
June, 1911.
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