Case, H. Photo-Optical Instrumentation: A Tool for Solving Traffic and Highway Engineering Problems. SPIE Digital Library.
Chicago-čujuhus (17. p.)Case, Harry. Photo-Optical Instrumentation: A Tool for Solving Traffic and Highway Engineering Problems. SPIE Digital Library.
MLA-čujuhus (9. p.)Case, Harry. Photo-Optical Instrumentation: A Tool for Solving Traffic and Highway Engineering Problems. SPIE Digital Library.
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