Research problem statements on user information systems.

Dades bibliogràfiques
Autor corporatiu:	National Research Council (U.S.). Transportation Research Board
Format:	Llibre
Idioma:	anglès
Publicat:	Washington, D.C. Transportation Research Board, National Research Council [1988]
Col·lecció:	Transportation Research Circular Number 336
Matèries:	Traffic signs and signals > Research. Highway communications > Research. Traffic engineering > Research.