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Class :Class IX Author :DR.MAKHAN CHANDRA CHOWDHURY,Dr. Dulal Chandra Santra,Dr. Dinen Bhattacharyya Subject :Science Life Science Text Book For Class 9 WBBSE West Bengal Board of Secondary Education The book is published revised edition and based according to the WBBSE new Syllabus. Written in an easy, lucid and colloquial language. The spelling is followed by Bengali Academy. We confidently hope that the book will serve the purpose of the students preparing for examination.