@book{74907,
	author = {Chipman, Robert A. and Taylor, Frank A.},
	title = {The Earliest Electromagnetic Instruments},
	publisher = {Project Gutenberg,},
	year = {2010},
	address = {Salt Lake City, UT :},
	note = {Release date is 2010-10-12},
	url = {https://www.gutenberg.org/ebooks/34061}
}