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Director of this institution and also thank Trustees of the institution for their co-operation in connection with the publication of my thesis.
I acknowledge my debt to the writers and publishers of the books I have referred to. It is a pleasure to acknowledge my gratitude to Dr. R. A. Sinari, Prof. Ramesh Dave, Prof. N. G. Kulkarni and Dr. S. S. Antarkar. I can hardly find appropriate words to express my gratitude to Dr. S. G. Mudgal under whose erudite, inspiring and affectionate guidance this research was done. Last but not the least, I wish to thank Mr. Chandulal Selarka for taking keen interest in my work and for writing 'words of welcome'.
Kokila H. Shah
