Gaya APA
Newcomb, , D, E. (1993).
Properties of dense graded and stone mastic asphalt mixtures containing roofing shingles .
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ASTM.
Gaya MLA
Newcomb, , David, E..
"Properties of dense graded and stone mastic asphalt mixtures containing roofing shingles".
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ASTM,
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Computer Software.