00457nam a2200145Ia 4500082001900000100003700019245010200056260003100158300001300189500002300202500000500225700002900230700003200259700002000291  a515.35bK89.NA  aKrasnosel'skii, M. A. and Others  aNonlinear almost periodic oscillationsbcBy M. A. Krasnosel'skii, V. Sh. Burd and Yu. S. Kolesov  aNew YorkbJohn Wileyc1973  ax, 326p.  a"Tr. by A. Libin".  a  aBurd, V. Sh. ; jt. auth.  aKolesov, Yu. S. ; jt. auth.  aLibin, A. ; tr.