by John M. Neal | Robert M. Liebert.
by Pauline V. Young | Calvin F. Schmid.
by John R. Bittwr | .
by S.N. Eisenstadt | .
by Wilbert E. Moore | .
by R. Mukherjee | .
by Edward A. Wright | Lenthiel H. Downs.
by Ram Krishna Mukherjee | .
by Marshall I. Goldman | .
by Theodore M. Mills | .
by Everett M. Rogers | J.B. Burdge.
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