This book represents a slightly revised version of my studies as a Teacher Fellow at the Centre of Advanced Study in Sanskrit, University of Poona. I started working for the present thesis in August 1977. Fortunately the 29th session of AIOC was held in June 78 in Poona so that I could come in direct contact of some eminent scholars of Paninian system of gram- mar. In 1979 March, a seminar was organized at the CASS, Poona University which was attanded by the scholars of great Eminence like Gaurinath Sastri. R.C. Pandeya, C.K. Rajn. It was conveined by Prof. S.D. Joshi, the Director of CASS Poona University. This seminar proved very vital and energetic for my studies. In December 1979, I was invited to attend the Lexico-workshop-cum seminar organized by Central Institute of Hindi Agra (10-22 December 79) where I could learn much by the demonstrations and lectures of Hardev Bahri, B.C. Balak- risnana. Prof. Vidya Niwas Misra and D.P. Patanayaka.
The Centre of Advanced study in Sanskrit, Poona University used to organize special lectures of the eminent scholars like G. Cardona, Paul Kiparsky etc. The scholars of CASS used to present brilliant research papers every week, which all inculcated a deep sense of research in my mind.