(Q50129454)
Statements
1 reference
Directional Guidance of Motor Vehicles—A Preliminary Survey and Analysis (English)
1 reference
Directional guidance of motor vehicles--a preliminary survey and analysis (English)
Biggs NL
1 reference
1 May 1966
1 reference
1 reference
9
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3
1 reference
193-202
1 reference
1 reference