Cottrell, Leonard S. (Leonard Slater), 1899–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- pdbooks.info ID: 62433
Leonard S. (Leonard Slater) Cottrell Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
| ||||||
| Delinquency areas | 1929 | Author | |  | |  | | ||
| Predicting success or failure in marriage | 1939 | Author | | | |  | | 
| |