Lyon, Bertrand, 1880–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- pdbooks.info ID: 11612
Bertrand Lyon Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
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| Improve your memory: concentration the key to mental mastery | 1930 | Author | |  | |  | | ||
| Practical public speaking | 1925 | Author | | | | | | 
| |
| Taking it on high: body strength and brain-power | 1921 | Author | | | | | | ||