National Science Digital Library (NSDL) begun as a Tenth Five Year Plan Network Project of Council of Scientific and Industrial Research (CSIR), NSDL is the only on of its kind that provides curriculum based content to address the information needs of the undergraduate students of science. The content creation and development for NSDL has gone through rigorous procedures to make available quality content for the students. Authored by eminent teachers and validated by renowned faculty in Indian universities and colleges, NSDL envisages bringing the finest content to the students