Acknowledgement

Thesis

Acknowledgement

Many helpful hands are needed to complete a beautiful work. After completion of work, immense joy can be experienced. I'm extremely grateful with all of them we have helped, guided and supervised to complete this work.

I would like to pay my sincere thanks to the thesis supervisor Prof. Sneha Lata Kafle of Shanker Dev Campus for incisive and constant guidance.

I would like to express my cordial gratitude my respected Prof. Bisheswor Man Shrestha for help motivation and inspiration from the very beginning to the end for providing valuable suggestions.

I am thankful all the staff members of Shanker Dev Library for their manifold helps and providing good environment for this study.

Last not least I am responsible for any errors and I apologize for any of them committed that may have remained in this work.

Bam Bdr. Chaudhary