| Title | Orbit Theory |
| Author | Garrett Birkhoff and R.. E. Langer |
| Publisher | American Mathematical Society |
| Year | 1959 |
| Reference | 7171 |
| Type of material | Proceedings |
| Received | 26/02/2009 |
| LOCATION | | Signature | 521 BIR |
| Shelfmark | Positional and Dynamical Astronomy (521) |
| Library | Corridor, 5th floor, SLO |
Status: Available |