@book{77863,
	author = {Atwater, Mary and Macmillan/McGraw-Hill School Publishing Company},
	title = {Changing earth Grade /},
	series = {Macmillan/McGraw-Hill science, unit 23.},
	address = {New York : Macmillan/McGraw-Hill School Pub. Co. , c1995},
	edition = {4th ed}
}