Recent harwell oscillator data for the fissile nuclei U235,U233 and Pu239 /
Rose, H.,author.
Copper, W.A.,author.
Tattersall, R.B.,author.
Atomic Energy Research Establishment (Harwell, England),issuing body.
Great Britain.Her Majesty's Stationery Office.
"Feb., 1958."
Sold but not published by H.M. Stationery Office.