1
Published [1982]

Report Number(s): APA 5 APA 287 APA 1340 APA 1582 SUS 79

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6
Published [1985]

Report Number(s): APA 2969

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7
8
Published [1984]

Report Number(s): APA 1027

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9
Published [1983]

Report Number(s): APA 467

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10
11
Published [1983]

Report Number(s): SUS 237

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12
Published [1985]

Report Number(s): APA 2968

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13
Published [1985]

Report Number(s): APA 2931

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20