@book{91143,
	author = {Danilov, Victor J. and ebrary, Inc.},
	title = {Hands-on science centers},
	publisher = {McFarland,},
	year = {2010.},
	address = {Jefferson, N.C. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10389860}
}