PIAGGIO, H.T.H.
An elementary treatise on differential equations and their applications - Delhi CBS pub. 1985 - xviii, 256, xxviii p.
139983
Differential equations:
515.35 / PIA
An elementary treatise on differential equations and their applications - Delhi CBS pub. 1985 - xviii, 256, xxviii p.
139983
Differential equations:
515.35 / PIA