The chemical engineer
| Prif Awdur: | |
|---|---|
| Awdur Corfforaethol: | |
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
[Manila]
Rotary Club of Manila
[date of publication not identified]
|
| Cyfres: | Brief studies in occupations, Rotary series
no.22 |
| Pynciau: |