COPSON, E.T
Partial differential equations / [by] E.T.Copson - London Cambridge University Press 1975 - vii, 279 p.
521098939
515.353 / COP
Partial differential equations / [by] E.T.Copson - London Cambridge University Press 1975 - vii, 279 p.
521098939
515.353 / COP