The primary objective of the book is to facilitate clear understanding of the subject. An attempt has been made to expose the concepts in simple and lucid manner as possible. The subject matter has been developed in a manner that would be within the easy grasp of the students having no previous knowledge. The concepts have been systematically explained to enhance the reading experience. We sincerely hope that the book will prove immensely useful for the students as well as fellow teachers.

[Source: Allied Publishers]