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and the Online Distributed Proofreading Team. SOCIOLOGY AND MODERN SOCIAL PROBLEMS BY CHARLES A. ELLWOOD, PH. D. Professor of Sociology, University of Missouri PREFACE This book is intended as an elementary text in sociology as applied to modern social problems, for use in institutions where but a short time can be given to the subject, in courses in sociology where it is desired to combine it with a study of current social problems on the one hand, and to correlate it with