著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL Symposium on Grading of Paving Asphalts by Viscosity at 140 F versus Penetration at 77 F and ASTM Committee D-4 on Road and Paving Materials,"Grading of paving asphalts by viscosity at 140 F versus penetration at 77 F : a symposium presented at the Sixty-ninth Annual Meeting, American Society for Testing and Materials, Atlantic City, N.J., 26 June-1 July, 1966",,ASTM,1967,ASTM special technical publication,,,,https://cir.nii.ac.jp/crid/1130282271075366400