Absorption spectrography and some of its
โ
Twyman, F.
๐
Article
๐
1930
๐
Wiley (John Wiley & Sons)
โ 471 KB
## CHEMISTRY AND INDUSTRY Julr 4, lOS0 for t.his proccsv bnd nlrcndy bcen granted to the two nnthors and the rights assigned to His Ifajcsty's Trensury ; the process ]ins coiue into USC nll over the world, mlicrcvcr nircrnft arc mndc, and lins bccn found irscfirl for such divcrsc purposes as tlic