ASPHALT INSTITUTE. (1962). ASPHALT PAVING MANUAL. ASPHALT INSTI.
Lua i Stíl Chicago (17ú heag.)ASPHALT INSTITUTE. ASPHALT PAVING MANUAL. ASPHALT INSTI, 1962.
Lua MLA (9ú heag.)ASPHALT INSTITUTE. ASPHALT PAVING MANUAL. ASPHALT INSTI, 1962.
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