By Ayres Frank

Published by Schaums outline series, 1962

By Spiegel, Murray r

Published by Schanms outline series, 1985

By Frank Ayres Jr. Ropbert E. Moyer

Published by Schaum's outline series McGraw hall, 1999

By Langesdorf Alexander S.

Published on 0

By Reinhold Remmert, Trans. Be:Robert B.Burcket

Published by Springer, 2005

By Arthur lewis, W.

Published on 1978

By Rana Behari

Published by S.Chand and Co, 1959

By Shanti Narayan

Published by S. Chand & Co. pvt. Ltd., 1987

By Abdul Majeed

Published by Ilmi Kitab Khana, 2002

By Earl A. Coddington and Borman Levinson

Published by Tata Mcgraw-Hill publishing co. ltd., 1990