Copper wire card.

Bibliographic Details
Corporate Author: United States. Bureau of Standards (Author)
Format: Government Document eBook
Language:English
Published: Washington, D.C. : Bureau of Standards, 1919.
Series:Miscellaneous publications (United States. Bureau of Standards) ; no. 17.
Subjects:
Online Access:https://purl.fdlp.gov/GPO/gpo70737
Description
Item Description:Title from title screen (viewed on July 28, 2016).
Physical Description:1 online resource (2 unnumbered pages).