Chapter 34
A treatise on ordinary and partial differential equations by William Woolsey Johnson. 1913

34.1 Chapter 1, Nature and meaning of a differential equation between two variables. page 12
34.2 Chapter 2, Equations of the first order and degree. page 20
34.3 Chapter VII, Solutions in series. Examples XIV. page 177
34.4 Chapter VII, Solutions in series. Examples XV. page 194
34.5 Chapter VII, Solutions in series. Examples XVI. page 220
34.6 Chapter IX, Special forms of differential equations. Examples XVII. page 247