21
22
Published [1981]

Report Number(s): APA 402

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23
Published [1981]

Report Number(s): APA 401 SUS 54

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27
Published 1952-1965.

Report Number(s): APA 4109

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28
Published [1984]

Report Number(s): APA 2466 SUS 422

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35
36
37
Published [1985]

Report Number(s): APA 2922 (draft) SUS 514

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38
Published [1985]

Report Number(s): APA 2922 SUS 565

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