A report on core 5 of Zenith.
Barclay, F. R.,author.
Cameron, I. R.,author.
Reed, D. L.,author.
Wilson, D. J.,author.
United Kingdom Atomic Energy Authority,issuing body.
Great Britain.Her Majesty's Stationery Office.
Freemantle, R. G.,author.
Sold but not published by H.M. Stationery Office.