N.N. Bogoliubov, D.V. Shirkov ; authorized English edition, revised and enlarged by the authors ; translated from the Russian by G.M. Volkoff[s.n.][19--]
N.N. Bogoliubov, D.V. Shirkov ; authorized English edition, revised and enlarged by the authors ; translated from the Russian by G.M. Volkoff[s.n.][19--]