Singh, Nahar and Singh, Niranjan and Tripathy, S. Swarupa and Soni,, Daya and Singh, Khem and Gupta, Prabhat K. (2013) Evaluation of purity with its uncertainty value in high purity lead stick by conventional and electro-gravimetric methods. Chemistry Central Journal , 7 (108). 108-117. ISSN 1752-153X