Mendelssohn, K. 1906-1980 What is atomic energy? / K. Mendelssohn. - London : Sigma, 1946 - 180 p. : ill. ; 19 cm. - Sigma introduction to science, 3 . - Sigma introduction to science, 3 . Errata slip inserted. Subjects--Topical Terms: Nuclear StructureNuclear energy.Nuclear physics. Dewey Class. No.: 539.7 / MEW 1946