Abraham, H. (1960). Asphalts and allied substances: Their occurrence, modes of production, uses in the arts and methods of testing (6th ed.). Princeton, N.J.: Van Nostrand.
Παραπομπή Chicago StyleAbraham, Herbert. Asphalts and Allied Substances: Their Occurrence, Modes of Production, Uses in the Arts and Methods of Testing. 6th ed. Princeton, N.J.: Van Nostrand, 1960.
Παραπομπή MLAAbraham, Herbert. Asphalts and Allied Substances: Their Occurrence, Modes of Production, Uses in the Arts and Methods of Testing. 6th ed. Princeton, N.J.: Van Nostrand, 1960.
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