Tan, E. (1980). Sampling considerations for diseases with low prevelence [microform]. Photoduplication Service. University of the Philippines Library.
Citace podle Chicago (17th ed.)Tan, Elizabeth. Sampling Considerations for Diseases with Low Prevelence [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1980.
Citace podle MLA (9th ed.)Tan, Elizabeth. Sampling Considerations for Diseases with Low Prevelence [microform]. Photoduplication Service. University of the Philippines Library, 1980.
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