By Wolfram Otto...[et.al By Wolfram Otto...[et.al] J. Willam Petty...[et.al by Cristian Bonetto...[et.al. by Cristian Bonetto...[et.al.] By Jos Arts...[et.al by Paul Smitz...[et.al By Colin Fisher...[et.al By Helen Meek...[et.al By Nell Dale...[et.al