TY  - BOOK
ED  - United States. National Bureau of Standards.
TI  - Journal of research of the National Bureau of Standards: 1975 : Section A Physics and chemistry 
SN  - 0022-4332
CY  - Washington, DC : 
PB  - US Gov. Print. Off.
KW  - სტანდარტები
KW  - პერიოდიკა
ER  -