00440nam a2200133Ia 4500082001900000100004300019245007400062260002600136300002100162500005100183500000500234700003500239700003200274  a530.2bEh33.CF  aEhrenfest, Paul and Ehrenfest, Tatiana  aThe conceptual foundations of the statistical approach in mechanicsb  aNew YorkbDoverc1990  axiv, 114p. Bibl.  a"Tr. from the German by Michael J. Moravcsik".  a  aEhrenfest, Tatiana ; jt. auth.  aMoravcsik, Michael J. ; tr.