Three-metre Echelle-Ebert general-purpose high-resolution spectrometer.
Thorne, R. P.,author.
Reid, C. D.,author.
United Kingdom Atomic Energy Authority,issuing body.
Great Britain.Her Majesty's Stationery Office.
Robinson, I.,author.
Sold but not published by H.M. Stationery Office.
Nov. 2, 1961.