.
Piaggio, Henry Thomas Herbert. **E5129.210 An elementary treatise on differential equations and their applica- tions.
— London. G. Bell & Sons, Ltd. 1920. xvi, 216, xxv pp. Diagrams. [Bell’s Mathematical series. Advanced section.] 21% cm., in 8s.
ha @ This card was printed at the Boston
Public Library, April 23, 1321. M1472 — S.r. — Differential equations. c