Slide rule manual : a text book for use with standard types of slide rules /
Wedi'i Gadw mewn:
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
[Melbourne? :
s.n.,
195-?]
|
| Pynciau: |
| Disgrifiad o'r Eitem: | For secondary school students. |
|---|---|
| Disgrifiad Corfforoll: | 59 p. : ill. ; 19 cm. |