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Published 1981]

Report Number(s): APA 257

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Published [1984]

Report Number(s): APA 1459

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Published [1981]

Report Number(s): APA 1367

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Published [1960]

Report Number(s): APA 3490

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Published [1981]

Report Number(s): APA 1364

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Published [1982]

Report Number(s): APA 6 SUS 44

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Published [1984]

Report Number(s): APA 1921

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Published ©1983.

Report Number(s): APA 1124

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Published [1975]

Report Number(s): APA 3486

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