Ricketts, Helen Louise
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- pdbooks.info ID: 119141
Helen Louise Ricketts Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
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| Méthode pour enseigner et acquérir une connaissance pratique du chiffre bilitère à l'usage des écoles primaires | 1918 | Author | |  | |  | |    
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