Harker, Ray Clarkson
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL6556574A
- pdbooks.info ID: 147047
Ray Clarkson Harker Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
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| The work of the Sunday-school; a manual for teachers | 1911 | Author | |  | |  | |    
| |