Campbell - A Short Course on Differential Equations - New paperback or - X555z

Boole - A Treatise on Differential Equations - New paperback or softba - X555z

Airy - An Elementary Treatise On Partial Differential Equations - New - X555z

Lectures On Partial Differential Equations (Paperback or Softback)

Lectures on Partial Differential Equations by I. G. Petrovsky

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1961 Lectures On Partial Derivative Equations I.G. Petrovsky In Russian HC

Airy - Elementary Treatise on Partial Differential Equations - paperba - X555z