About The Book/Author :

This is professor P.N.Mathur’s last book practically written on his death bed. At the time of his retirement from University of Wales at aberystwyth, UK he had developed many other interests outside economy, principally ancient Indian astronomy. However, after a few years he become fascinated with price structures in economies and as these are affected by the technologies in use, he later become interested in the mechanics of how older technologies are gradually replaced by newer ones.