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This paper is a part of a larger research project conducted by the Department of Sociology and Anthropology, Cornell University.
The investigation was supported by grants from the Lilly Endowment, Inc., and the National Institute of Mental Health, United States Public Health Service (Grant M-1196). The authors are pleased to acknowledge the assistance of Dr. Wayne E. Thompson who collaborated in setting up the design for the analysis and the procedures for conducting the statistical tabulations.
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