Some preliminary measurements of the Tritium and Carbon 14 content of the stratosphere over England /
Barclay, F. R.,author.
Elliott, M. J. W.,author.
Goldsmith, P.,author.
Jelley, J. V.,author.
Osborne, A. R.,author.
Atomic Energy Research Establishment (Harwell, England),issuing body.
Great Britain.Her Majesty's Stationery Office.
"April, 1960."