Effectiveness of neutrons as a function of their energy in the natural uranium envelope of zephyr /
Rose, H.,author.
Absalom, R. M.,author.
Atomic Energy Research Establishment (Harwell, England),issuing body.
Great Britain.Her Majesty's Stationery Office.
"March 4, 1957."
Sold but not published by H.M. Stationery Office.