by M.H. Gopal | .
by David B. Brianverhoff | Lynn K. White.
by Kingsley Davis | .
by Morris Ginsberg | .
by L. M. Gudoshnillov | .
by O.P. Joshi | .
by John Lofland | Lyn H. Lofland.
by Hans Raj | .
by Ian Robertson | .
by Graham Room | .
by Jerry D. Rase | .
by N.R. Sheth | .
by M.H. Syed | .
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