A book explaining the importance of documents in business communication. - Title: Overview of Document Communication - Author: Yo Nakagawa, Volume 1: Principles and Procedures - Author: Yo Nakagawa, Volume 2: Techniques and Game Management - Series Title: Overview of Problem Solving - Series Title: Proceed with Communication in Solve, Move, and Fast - Series Title: Implement DCI - Content: The importance of documents in business communication and its mechanism - Content: Communication methods for problem solving - Content: The process and techniques of document creation Title: Overview of Problem Solving Volume 1: Hard Thinking Edition Volume 2: Soft Thinking Edition Please inquire about individual sales.