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1
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2ΒιβλίοΈκδοση 1968“…United States. Federal Highway Administration…”
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3ΒιβλίοΈκδοση 1974“…United States. Federal Highway Administration…”
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4
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5ΒιβλίοΈκδοση 1972“…United States. Federal Highway Administration…”
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6ΒιβλίοΈκδοση 1977“…United States. Federal Highway Administration…”
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7ΒιβλίοΈκδοση 1974“…United States. Federal Highway Administration. Traffic Systems Division…”
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8Βιβλίοανά Sack, Ronald L.“…United States. Federal Highway Administration. Offices of Research and Development…”
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9ΒιβλίοΈκδοση 1972“…United States. Federal Highway Administration…”
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10Βιβλίοανά Miklofsky, Haaren A.“…United States. Federal Highway Administration. Offices of Research and Development…”
Έκδοση 1977
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11
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12
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13ΒιβλίοΈκδοση 1972“…United States. Federal Highway Administration…”
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14Κυβερνητικό Έγγραφο ΒιβλίοΈκδοση 1976“…United States. Federal Highway Administration. Office of Program and Policy Planning…”
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15ΒιβλίοΈκδοση 1972“…United States. Federal Highway Administration…”
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16ΒιβλίοΈκδοση 1994“…United States. Federal Highway Administration…”
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17
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18
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19
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20ΒιβλίοΈκδοση 1973“…United States. Federal Highway Administration…”