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		No cover image available Analysis of collateral data : a method for assessing and correcting the effects of attrition on internal validity by Ashurst, James T Rocha, Olivia de la Tobis, Jerome Material type: Text; Format: print ; Literary form: Not fiction Availability: No items available.
		No cover image available Box, line, and midgap plots : effects of display characteristics on the accuracy and bias of estimates of whisker length by Stock, William A Behrens, John T Material type: Text; Format: print ; Literary form: Not fiction Availability: No items available.
		No cover image available The high school economics course and its impact on economic knowledge by Peterson, Norris A Material type: Text; Format: print ; Literary form: Not fiction Availability: No items available.
		No cover image available The use of discriminant analysis to determine subject attrition bias in field research by Zahrly, Jan Material type: Text; Format: print ; Literary form: Not fiction Availability: No items available.

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