My self Dr. NileshKumar Madhubhai Baria Associate professor in chemistry subject, M.B.Patel Science College, Anand, Gujarat, India. My educational qualification the research is just completed, I had awarded gold medal in undergraduate level. My post graduate subject is Industrial Polymer Chemistry. An important aspect of this book is its concentration on the sports, something noticeably among other text this level. In this present edition that strength has been built on and much of the coverage in this area has been extended and brought up to date. Interest in sports has continued to escalate since the present edition and this is reflected and increase coverage of the sports aspect of the subject.