| Title | Paper | Date | Type | ||
|---|---|---|---|---|---|
| 1 |
 |
Helper Journal | 1931-01-01 | page | |
| 2 |
 |
Helper Journal | 1931-01-01 | page | |
| 3 |
 |
Helper Journal | 1931-01-01 | page | |
| 4 |
 |
Helper Journal | 1931-01-01 | page | |
| 5 |
 |
Helper Journal | 1931-01-08 | page | |
| 6 |
 |
Helper Journal | 1931-01-08 | page | |
| 7 |
 |
Helper Journal | 1931-01-08 | page | |
| 8 |
 |
Helper Journal | 1931-01-08 | page | |
| 9 |
 |
Helper Journal | 1931-01-15 | page | |
| 10 |
 |
Helper Journal | 1931-01-15 | page | |
| 11 |
 |
Helper Journal | 1931-01-15 | page | |
| 12 |
 |
Helper Journal | 1931-01-15 | page | |
| 13 |
 |
Helper Journal | 1931-01-22 | page | |
| 14 |
 |
Helper Journal | 1931-01-22 | page | |
| 15 |
 |
Helper Journal | 1931-01-22 | page | |
| 16 |
 |
Helper Journal | 1931-01-22 | page | |
| 17 |
 |
Helper Journal | 1931-01-29 | page | |
| 18 |
 |
Helper Journal | 1931-01-29 | page | |
| 19 |
 |
Helper Journal | 1931-01-29 | page | |
| 20 |
 |
Helper Journal | 1931-01-29 | page | |
| 21 |
 |
Helper Journal | 1932-01-07 | page | |
| 22 |
 |
Helper Journal | 1932-01-07 | page | |
| 23 |
 |
Helper Journal | 1932-01-07 | page | |
| 24 |
 |
Helper Journal | 1932-01-07 | page | |
| 25 |
 |
Helper Journal | 1932-01-07 | page |