Beltran, D. G. (1963). A method of determining economical sample size for sample surveys.
Style de citation Chicago (17e éd.)Beltran, Diosdado G. A Method of Determining Economical Sample Size for Sample Surveys. 1963.
Style de citation MLA (9e éd.)Beltran, Diosdado G. A Method of Determining Economical Sample Size for Sample Surveys. 1963.
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