By Thomas H Wonnadt, Ronald J Wonnacott

Published by National book foundation, 2004

By Richard L. Liboff

Published by National book foundation, 2004

By Linus Pauling

Published by McGraw Hill Book Company, 0

By Edward E. Ruppert, Robert D.Barnes

Published by National book foundation, 2004

By P.S.Verma, E.L.Jordan

Published by S.Chand and Company Ltd., 1994

By Joseph G Engemann & Robert W Hegner

Published by Macmillan Publishing Co., 1981

By E.L.Jordan and P.S.Verma

Published by S.Chand and Co. ltd., 1991

By Hegner and Engemann

Published on 1984

By Engemann, Hegner

Published by The Macmillan Co.

By Hegney/Engemann

Published by The Macmillan Co., 0