The technique for appraising certain observable behavior of children in science in elementary schools.
| Κύριος συγγραφέας: | |
|---|---|
| Μορφή: | Βιβλίο | 
| Γλώσσα: | English | 
| Έκδοση: | New York, New York
          Teachers College, Columbia University
    
        1937. | 
| Σειρά: | Teachers College Columbia University. Contributions to education, no. 728 |