@book{244763,
	author = {Enger, Sandra K. and ebrary, Inc.},
	title = {Exemplary science in grades PreK-4},
	publisher = {NSTApress,},
	year = {c2006.},
	series = {The Exemplary science monograph series},
	address = {Arlington, Va. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10158463}
}