@book{103376,
	author = {Waldron, William H.},
	title = {Terrain Exercises},
	publisher = {Project Gutenberg,},
	year = {2020},
	address = {Salt Lake City, UT :},
	note = {Release date is 2020-07-04},
	url = {https://www.gutenberg.org/ebooks/62552}
}