Khatri, B. K. T.; Bhaduri, I. .; Garg, R. .; Srivastava, A. K. .; Kumar, D. .; Parashar, R. K. .; Verma, R. .; Farkya, S. . Construction and Pilot Test of an Instrument to Measure the Gaps in Teaching-Learning of Science at Middle Stage in Select Tribal Dominated Rural Schools of Chhattisgarh, India . SS 2017, 55 (4), p.5-21.