Llwytho...
Sky and sextant :
| Prif Awdur: | |
|---|---|
| Fformat: | Printed Book |
| Cyhoeddwyd: |
New York :
Van Nostrand Reinhold,
c1978.
|
| Rhifyn: | 2d ed. |
| Pynciau: |
| Disgrifiad o'r Eitem: | Includes index. |
|---|---|
| Disgrifiad Corfforoll: | vi, 223 p. : ill. ; |
| ISBN: | 0442211368 |