@book{157,
	author = {Wittgenstein, Ludwig, and Project Gutenberg.},
	title = {Tractatus Logico-Philosophicus},
	publisher = {Project Gutenberg Literary Archive Foundation,},
	year = {2004.},
	address = {Salt Lake City :},
	note = {Records generated from Project Gutenberg RDF data.},
	url = {http://www.gutenberg.org/etext/5740}
}