@book{101798,
	author = {Harper, Charles G.},
	title = {A Practical Hand-book of Drawing for Modern Methods of Reproduction},
	publisher = {Project Gutenberg,},
	year = {2019},
	address = {Salt Lake City, UT :},
	note = {Release date is 2019-12-20},
	url = {https://www.gutenberg.org/ebooks/60972}
}