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Search keyword：(Author: #Kronig Ralph de Laer)
The optical basis of chemical valence / by R. de L. Kronig
Cambridge : University Press , 1935
(The Cambridge series of physical chemistry)
The optical basis of the theory of valency / by R. de L. Kronig
Band spectra and molecular structure / by Ralph de Laer Kronig
Cambridge : The University Press , 1930