Books by Paul Gray:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Gray, Paul: Summary report : California futures study : analysis of impacts for transportation planning (State of California, Business and Transportation Agency, Dept. of Transportation, Division of Transportation Planning, 1974), also by Olaf Helmer-Hirschberg and California. Division of Transportation Planning (page images at HathiTrust)
Find more by Paul Gray at your library, or elsewhere.