@book{249,
	author = {Cohen, J.B.},
	title = {Organic chemistry for advanced students. part 11:Structure},
	publisher = {Edward Arnold,},
	year = {1931},
	address = {London},
	edition = {5 ed},
	url = {http://www.amazon.com/exec/obidos/ASIN/B002JK06JE/chopaconline-20}
}