1
Published 1980-1982.
“...SUS 321...”Report Number(s): APA 3127 APA 3128 APA 3129 APA 3130 APA 3268 SUS 321 SUS 322 SUS 323 SUS 324 SUS 325
Direct link to first available issue (November 1980).List of issues.
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3
Published [1981]
“...SUS 83...”Report Number(s): APA 324 (draft) RTS 7 (draft) SUS 83
Link to full text