The gravity model in transportation analysis theory and extensions
| Prif Awdur: | |
|---|---|
| Awduron Eraill: | |
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Utrecht, Netherlands
VSP
1990.
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| Cyfres: | Topics in transportation.
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| Pynciau: |