H. W. Bearce
A Fundamental Basis For Measurements of Length - USA Government Printing Office 1926 - 395-408 26 cm
Scientific Papers of the Bureau of standards, No.535, Part of Volume 21
1926
English
General
A Fundamental Basis For Measurements of Length - USA Government Printing Office 1926 - 395-408 26 cm
Scientific Papers of the Bureau of standards, No.535, Part of Volume 21
1926
English
General