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A summary of the Oregon state survey of mental defect, delinquency and dependency: conducted in 1920 by the University of Oregon under the direction of the United States Public Health Service at the request of the Legislature of the State of Oregon ; condensed and edited by Earl Kilpatrick
A summary of the Oregon state survey of mental defect, delinquency and dependency: conducted in 1920 by the University of Oregon under the direction of the United States Public Health Service at the request of the Legislature of the State of Oregon ; condensed and edited by Earl Kilpatrick