The Harper encyclopedia of basic science.
| Fformat: | Llyfr |
|---|---|
| Iaith: | English |
| Cyhoeddwyd: |
New York
Harper & Row
1967.
|
| Rhifyn: | Rev. ed. |
| Cyfres: | Published in 1965 under title: The International encyclopedia of science.
|
| Pynciau: |