Birkhoff, Garrett,
Ordinary differential equations [by] Garrett Birkhoff [and] Gian-Carlo Rota. - Boston, Ginn [1962] - vi, 318 p. illus.
Differential equations
Ordinary differential equations [by] Garrett Birkhoff [and] Gian-Carlo Rota. - Boston, Ginn [1962] - vi, 318 p. illus.
Differential equations