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6621
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6622
The stratification of a positively skewed population by a quantitative variable [microform]
Veröffentlicht 1973Visual Material -
6623
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6624
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6625
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6626
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6627
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6628
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6629
Experimental schools revisited bulletins of the Bureau of Educational Experiments.
Veröffentlicht 1973Buch -
6630


