Publishing History

This is a chart to show the publishing history of editions of works about this subject. Along the X axis is time, and on the y axis is the count of editions published. Click here to skip the chart.  This graph charts editions published on this subject.
Editions Published
Year of Publication

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Prolific Authors

who have written the most books on this subject
Stephen R. Covey, 2 books
Loretta LaRoche, 1 book
Ethel S. Person, 1 book
James Hartley, 1 book
Sean Covey, 1 book
Tal Ben-Shahar, 1 book
Rolf Dobelli, 1 book
Hikmet Pala, 1 book