1.

雑誌

雑誌
National Association of Corporation Training
出版情報: New York, N.Y. : National Association of Corporation Training, 1920-1921
巻次(年次): Vol. 7, no. 9 (Sept. 1920)-v. 8, no. 12 (Dec. 1921)
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2.

雑誌

雑誌
National Association of Corporation Training
出版情報: New York : National
巻次(年次): Vol. 9, no. 1/2 (Jan./Feb. 1922)-v. 9, no. 4 (Apr. 1922)
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