Differential equations :
Lefschetz, Solomon
Differential equations : geometric theory / Solomon Lefschetz. geometric theory / - 2nd ed. - New York : Dover publications, 1963 - x, 390p. ; 21x15cm.
Includes bibliography, list of principal symbols and index.
0-486-63463-9 : $5
DIFFERENTIAL EQUATIONS
515.35 / LEF-DIF
Differential equations : geometric theory / Solomon Lefschetz. geometric theory / - 2nd ed. - New York : Dover publications, 1963 - x, 390p. ; 21x15cm.
Includes bibliography, list of principal symbols and index.
0-486-63463-9 : $5
DIFFERENTIAL EQUATIONS
515.35 / LEF-DIF