AGRAWAL, D. P.; BHANDARI, N.; LAL, B. B.; SINGHVI, A. K. Physical research laboratory TL dates - 1981 (I). Ancient TL, [S. l.], v. 5, n. 1, p. 10, 1981. DOI: 10.26034/la.atl.1981.045. Disponível em: https://www.ancienttl.org/article/view/6307. Acesso em: 1 may. 2025.