@book{9247,
	author = {Tilbury, Glen.},
	title = {Problem Solving in Chemistry :a dimensional approach},
	publisher = {Houghton Mifflin School,},
	year = {1985.},
	address = {Chicago},
	edition = {4th ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0395360080/chopaconline-20}
}