References
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- 1949 . A Method of Estimating Birth and Death Rates and the Extent of Registration . Journ. Amer. Statist. Assoc. , xliv ( 245 ) March
- P. K. , Whelpton . 1934 . The Completeness of Birth Registration in the United States . Journ. Amer. Statist. Assoc. , xxix ( 186 ) June