Matches in Library of Congress for { ?s ?p Roads Economic aspects Mathematical models.. }
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- 70512370 subject "Roads Economic aspects Mathematical models.".
- 74159357%2F%2Fr86 subject "Roads Economic aspects Mathematical models.".
- 78104549 subject "Roads Economic aspects Mathematical models.".
- 79011740%2F%2Fr85 subject "Roads Economic aspects Mathematical models.".
- 83115602 subject "Roads Economic aspects Mathematical models.".