1.

図書
図書
1. Accounting programs and business systems : case studies
[by] Frank J. Clark [and] Robert L. Gray
出版情報: Pacific Palisades, Calif. : Goodyear Pub. Co, [1971]
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2.

図書
図書
2. Mathematics for data processing
by Frank J. Clark
出版情報: Reston, Va. : Reston Pub. Co, c1974
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