2
Published [1981]
...SUS 80...

Report Number(s): APA 1210 SUS 80

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3
4
Published [1981]
...SUS 56...

Report Number(s): APA 10 APA 84 APA 297 APA 1327 SUS 56

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5
Published [1982]
...SUS 79...

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

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7