by National Research Council (U.S.). Transportation Research Board
![[William Wheeler Hubbell, authorized to apply for patents.]](https://covers.openlibrary.org/b/id/10200621-M.jpg)
United States. Congress. Senate. Committee on Patents
Kokuritsu Kokkai Toshokan (Japan)
United States. National Transportation Safety Board.
Rex Ellingwood Beach
Silas Seymour
Henan Sheng di fang shi zhi bian zuan wei yuan hui
