Ungar, A. (1967). Traffic attraction of rural outdoor recreational areas. Highway Research Board, Division of Engineering, National Research Council, National Academy of Sciences--National Academy of Engineering.
Citace podle Chicago (17th ed.)Ungar, Andrew. Traffic Attraction of Rural Outdoor Recreational Areas. [Washington]: Highway Research Board, Division of Engineering, National Research Council, National Academy of Sciences--National Academy of Engineering, 1967.
Citace podle MLA (9th ed.)Ungar, Andrew. Traffic Attraction of Rural Outdoor Recreational Areas. Highway Research Board, Division of Engineering, National Research Council, National Academy of Sciences--National Academy of Engineering, 1967.
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