By W.T.Welf Ford

Published by ELBS, 1988

By Franisweston Sears

Published by Sang e meel publications, 1986

By W.T.Welford

Published by English L:anguage book society/oxford university p, 1988

By Abbott, A.F.

Published on 1985

By A.F.Abbott

Published by Arbold Heinemann publishers, pvt. Ltd., 1986

By D.R.Khanna

Published by Atama Ram and sons, 1983

By Neal S Thornton

Published by Penguin Books, 1987

By Paul A Trpler

Published by CBS Publishers and distributors, 1989

By Alonso Finn

Published by Sang e meel publications, 1986

By Robert Hutchings

Published by University of Bath, 2000