Problems in mechanical drawing with emphasis on freehand sketching.
| Prif Awdur: | |
|---|---|
| Awduron Eraill: | , |
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
St. Louis, Mo.
Webster Division, McGraw-hill
c1966.
|
| Rhifyn: | [3d ed]. |
| Pynciau: |