Ang pagpapaunlad ng sarili sa paggawa
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | Filipino |
| Cyhoeddwyd: |
Manila
Bureau of Printing
1939.
|
| Cyfres: | Philippine adult education series : bulletin
no.2 |
| Pynciau: |