Text ( visual ) : unmediated Lectures on differential equations / by Solomon Lefschetz. -- New York : Kraus Reprint , 1965. -- viii, 209 p. : ill. ; 23 cm. -- (Annals of mathematics studies ; no. 14). -- Reprint. Originally published: Princeton : Princeton University press, 1946 ; Includes index. -- (BA19949735) ; https://ci.nii.ac.jp/ncid/BA19949735 Author Heading(s): Lefschetz, Solomon. -- Classification(s): LCC : QA371 ; DC : 517.38 ; DC : 510.82. -- Subject Heading(s): LCSH : Differential equations