ID:DA13723011
University of Minnesota. Dept. of Preventive Medicine and Public Health
University of Minnesota. College of Medical Sciences. School of Public Health
Minnesota. University. School of Public Health
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conducted by School of Public Health, University of Minnesota with the cooperation of Mayo Foundation, the Communicable Disease Center and Division of Hospital and Medical Facilities of the U. S. Public Health Service
Communicable Disease Center 1964 Public Health Service publication no. 1188
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