English step by step : English for beginners and an elementary refresher course, English for intermediate learners, English for advanced learners and scientiests
| Prif Awduron: | , , |
|---|---|
| Awduron Eraill: | |
| Fformat: | Llyfr |
| Iaith: | German |
| Cyhoeddwyd: |
Leipzig :
Verlag Enzyklopädie,
1990
|
| Rhifyn: | 8., unveränd. Aufl. |
| Cynnwys/darnau: | 1 o gofnodion |