Differential equations; geometric theory/
Lefschetz, Solomon, 1884-1972.
Differential equations; geometric theory/ Solomon Lefschetz. - New York: Interscience Publishers, 1957. - 364 p.: illus., 24 cm. - Pure and applied mathematics, v. 6. . - Pure and applied mathematics (Interscience Publishers) v. 6. .
57009155 /L/r83
GB58-2298
Differential equations.
Topology.
515.35
Differential equations; geometric theory/ Solomon Lefschetz. - New York: Interscience Publishers, 1957. - 364 p.: illus., 24 cm. - Pure and applied mathematics, v. 6. . - Pure and applied mathematics (Interscience Publishers) v. 6. .
57009155 /L/r83
GB58-2298
Differential equations.
Topology.
515.35