TY - BOOK AU - Abraham, Herbert TI - Asphalts and allied substances, their occurrence, modes of production, uses in the arts, and methods of testing AV - TN 853 A2 PY - 1962///, c1960 CY - Princeton, N.J. PB - Van Nostrand KW - Asfalto KW - BetĂșn KW - BibliografĂ­a ER -