| Item Description: | Originally published: Pittsburgh : Transportation Research Institute, Carnegie-Mellon University, 1971. |
|---|---|
| Physical Description: | 103 p. ; 28 cm. |
| Bibliography: | Bibliography: p. 61-62. |
| Item Description: | Originally published: Pittsburgh : Transportation Research Institute, Carnegie-Mellon University, 1971. |
|---|---|
| Physical Description: | 103 p. ; 28 cm. |
| Bibliography: | Bibliography: p. 61-62. |