THE art of concentration is one of the simplest to learn, and one of the greatest when mastered; and these pages are written especially for those who wish to learn how to master this fine art in all of its aspects; who wish to develop the power to concentrate well at any time and for any purpose; who wish to make real concentration a permanent acquisition of the mind.
- ISBN13 9781329823136
- Publish Date 11 January 2016
- Publish Status Active
- Publish Country US
- Imprint Lulu.com
- Format eBook
- Language English