21
Published 1982.
...SUS 28...

Report Number(s): APA 938 (draft 2) RTS 14 (draft 2) SUS 28

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22
Published 1983.
...SUS 182...

Report Number(s): APA 86 APA 87 APA 88 APA 585 APA 586 APA 587 RTS 15 RTS 15f RTS 15g RTS 15h SUS 182

Direct link to the first two parts.
List of all parts and appendices.
24
Published [1984?]

Report Number(s): APA 4153 RTS 23 (draft)

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