Journal of research of the National Bureau of Standards : 1976 : B Mathematical sciences / United States. National Bureau of Standards. - Washington, D.C. : For sale by the Supt. of Docs. - v. ISSN: 0098-8979 Subjects--Index Terms: სტანდარტები მათემატიკა პერიოდიკა Universal Decimal Class. No.: 51(05)