Rao, C N R The periodic table - an introduction/ C.N.R Rao and Indumati Rao - Benguluru: Navakarnataka, 2019 - 88p. : Col. ill. ; 14 cm ISBN: 9789389308396 Rs. 225 Subjects--Topical Terms: Periodic table of the elementsChemical elementsPeriodic law Dewey Class. No.: 546.8 / R 18 pre