Uranium spectrum between 3500 A and 5500 A with associated isotopic shifts /
Richards, E. W. T.,author.
Crew, M. D.,author.
Atomic Energy Research Establishment (Harwell, England),issuing body.
Great Britain.Her Majesty's Stationery Office.
"Sept., 1959."
Sold but not published by H.M. Stationery Office.