Scientific American /
| Awdur Corfforaethol: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
New York:
Scientific American,
July 2008.
|
| Rhifyn: | First edition. |
| Pynciau: | |
| Mynediad Ar-lein: | http://www.angelfire.com/folk/thegrieves/transfer/200807.pdf |