@book{93212,
	author = {Wilkinson, W. T. and Wilson, Edward L.},
	title = {Photo-engraving, Photo-etching and Photo-lithography in Line and Half-tone :},
	publisher = {Project Gutenberg,},
	year = {2016},
	address = {Salt Lake City, UT :},
	note = {Release date is 2016-06-19},
	url = {https://www.gutenberg.org/ebooks/52378}
}