@book{6639,
	author = {Kettle, S. F. A.},
	title = {Symmetry and structure /},
	publisher = {Wiley,},
	year = {c1985.},
	address = {Chichester [West Sussex] ;},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy0607/84017365-d.html}
}