Harwell values of the 2,200 m/sec neutron data for U233, U235 and Pu239 /
Egelstaff, P. A.,author.
Atomic Energy Research Establishment (Harwell, England),issuing body.
Great Britain.Her Majesty's Stationery Office.
" March 18, 1957."
Sold but not published by H.M. Stationery Office.