一般注記 |
His Comparing telephone and personal interview surveys, 1979: t.p. (Robert M. Groves; Survey Research Center, U. of Mich.) Kish, L. Sampling errors ... 1976 (a.e.) t.p. (R. M. Groves, Survey Research Center, Institute for Social Research, Univ. of Mich., Ann Arbor)
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