The subject Mathematics is one or the fundamental natural sciences which is essentially needed at all times and in every sphere of life. Unquestionably mathematics is everlasting-as true. in the future as it has been in the past. Sometimes it becomes difficult to recall the mathematical data and formulae in need for which such a handbook is essential for ready reference. The present volume contains Mathematical Tables and Formulae. I shall be happy if this volume is granted by all as a handy and reliable source for the mathematical information that will be needed many times in years to come. About the Author Shri D.N. Ghose born in 1938. is an well-known author. His first book was published in 1956. Three of his books were selected by the Government of West Bengal (1956--60) for Adult Education. In 1972. National Council of Educational Research & Training. New Delhi. awarded Certificate of Merit for his manuscript Purano Sei Diner Kathawhich ranked second in 17th All India Childrens Literature Competition. Shri Ghose obtained Bachelor Degree (1963) and Master Degree (1969) in Civil Engineering from Jadavpur University. In early 1959 he started his career as a Teacher in Engineering and afterwards held the posts of Head of the Department of Civil Engineering and offg. Principal of Don Bosco Polytechnic. Calcutta. In 1973. Shri Ghose organised Refresher Course on Public Health Engineering in the Institution of Engineers. India and conducted Unitary Summer School on Public Health Engineering under-the sponsorship of India Society for Technical Education. He was also Examiner (1966-72) of various qualifying examinations in the field of Civil Engineering. Shri Ghose as Public Health Engineer (1973-77) of Tata Engineering & Locomitive Company was responsible for operation control and maintenance of water treatment plants. sewage treatment plant and town water supply of TELCO. In early 1977 he joined Calcutta Metropolitan Development Authority and visited U.S.A. with a work programme on Computer Analysis of the Water Distribution Network for the City of Calcutta. During his stay in CMDA he was engaged in planning. design and development work on sewerage drainage and solid waste management in CMD area. Presently Shri Ghose is working as a consultant in the field of Environmental Engineering.