@book{12803,
	author = {Krebs, Robert D. and Walker, Richard D.},
	title = {Highway Materials /},
	publisher = {McGraw-Hill Inc.,US,},
	year = {1971.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/0070354650/chopaconline-20}
}