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A seminal time management book published in 1973 by Alan Lakein, one of the first modern time management books that inspired early time management research and helped establish the field. Lakein is also known for creating the Swiss Cheese Method of productivity.

A landmark time management book published in 1972 by Alec MacKenzie, one of the first modern time management books that inspired early time management research and helped popularize structured approaches to personal time organization.