By David Bryant

Published by Hodder and Houghton, 1985

By Nasir Ahmad

Published by The carvan book house, 1965

By Faraday Michael

Published by Collier Books, 1962

By Donald A Cooke

Published by Crown publishers Inc., 1985

By Nigel Henbest and Michael Marten

Published by Cambridge University Press, 1986

By Arthur Besier

Published by Mcrgrw Hill, 0

By Frederick J Bueche

Published by Mc Graw, 1989

By Langesdorf Alexander S.

Published on 0

By David Robertson

Published by Penguin Books, 1985

By John T Houghton CBE, FRS

Published by Cambridge University Press, 1986