1.

図書
図書
1. Making the office pay : tested office plans, methods and systems that make for better results from everyday routine, secured from the offices of the hundreds of successful business men who are using them to increase profits by cutting costs
edited by W.H. Leffingwell
出版情報: Osaka : T.M.C. Press, 1984
シリーズ名: The evolution of management thought ; no. 26
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2.

図書
図書
2. Office management : principles and practice
by William Henry Leffingwell
出版情報: Osaka : T.M.C. Press, 1984
シリーズ名: The evolution of management thought ; no. 25
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