Research problem statements

書誌詳細
団体著者:	National Research Council (U.S.). Transportation Research Board
フォーマット:	図書
言語:	English
出版事項:	Washington, D.C. The Board 1980.
シリーズ:	Transportation Research Circular Number 217
主題:	Highway research > United States. Roads > Design and construction. > Research > United States.