@book{219153,
	author = {National Institute of Standards and Technology U.S.},
	title = {User's guide to the virtual cement and concrete testing laboratory},
	publisher = {U.S. Dept. of Commerce, National Institute of Standards and Technology},
	year = {[2003]},
	address = {Gaithersburg, Md.},
	note = {Title from title screen (viewed on Feb. 13, 2008)},
	url = {http://purl.access.gpo.gov/GPO/LPS90605}
}