@book{72391,
	author = {Stevens, N. M.},
	title = {Studies in Spermatogenesis (Part 1 of 2)},
	publisher = {Project Gutenberg,},
	year = {2010},
	address = {Salt Lake City, UT :},
	note = {Release date is 2010-03-07},
	url = {https://www.gutenberg.org/ebooks/31545}
}