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Published [1981?]

Report Number(s): APA 62 APA 1265

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Published [1981]

Report Number(s): APA 387 SUS 3

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Published [1980]

Report Number(s): APA 512

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Published [1982]

Report Number(s): APA 42 APA 451

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Published 1980?]

Report Number(s): APA 392

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