Refractories,
Wedi'i Gadw mewn:
| OCLC: | 3759415 |
|---|---|
| Prif Awdur: | |
| Iaith: | English |
| Cyhoeddwyd: |
New York, London,
McGraw-Hill,
1931.
|
| Rhifyn: | 1st. ed. |
| Pynciau: | |
| Fformat: | Monograph Note that CRL will digitize material from the collection when copyright allows. |