Additional salient features of this edition are: it contains in depth last minute quick revision of the subject. Pointwise presentation of the text helps students to develop confidence and save precious time in their last minute revision of all the topics prior to written and viva-voce examinations. This will also help them to present with an appropriate answer. Handy and student-feirndly, the book makes learning of the subject effortless and very interesting. The book will be a great help in attempting the questions that require precise answer.