Health problem sources /
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
New York city :
Teachers college, Columbia university,
1926.
|
| Series: | Contributions to education ;
no. 224. |
| Subjects: |
| Item Description: | Published also as thesis (Ph.D.) Columbia university, 1926. |
|---|---|
| Physical Description: | ix, 151 pages including tables. ; 24 cm. |