The CDC Quota Sampling Technic with Results of 1959 Poliomyelitis Vaccination Surveys
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منابع مشابه
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ژورنال
عنوان ژورنال: American Journal of Public Health and the Nations Health
سال: 1960
ISSN: 0002-9572
DOI: 10.2105/ajph.50.12.1847