21
Published [1984]

Report Number(s): APA 1027

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22
Published [1983]

Report Number(s): APA 467

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23
25
Published [1981]

Report Number(s): APA 227 APA 360 APA 361

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26
Published [1982]

Report Number(s): APA 227 APA 370 APA 1297 SUS 51

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28
Published [1983]

Report Number(s): SUS 237

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30
Published [1985]

Report Number(s): APA 2968

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31
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Published 1976.

Report Number(s): APA 769

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38
Published [1985]

Report Number(s): APA 2931

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39
Published [1984]

Report Number(s): APA 1113

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40