Case, H. Photo-Optical Instrumentation: A Tool for Solving Traffic and Highway Engineering Problems. SPIE Digital Library.
Παραπομπή σε μορφή Chicago (17η εκδ.)Case, Harry. Photo-Optical Instrumentation: A Tool for Solving Traffic and Highway Engineering Problems. SPIE Digital Library.
Παραπομπή σε μορφή MLA (9th εκδ.)Case, Harry. Photo-Optical Instrumentation: A Tool for Solving Traffic and Highway Engineering Problems. SPIE Digital Library.
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