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Published [1980]

Report Number(s): APA 328 APA 1204

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Published [1982]

Report Number(s): APA 3 APA 1208 SUS 57

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Published [1981]

Report Number(s): APA 333

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by Ballard, Warren B.,
Published 1978.

Report Number(s): APA 917

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Published 1983]

Report Number(s): APA 217

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