TY  - BOOK
AU  - Lefschetz,Solomon
TI  - Differential equations: geometric theory 
SN  - 0486634639 :
AV  - QA371 .L36 1977
U1  - 515/.35 
PY  - 1963///
CY  - New York
PB  - Dover Publications
KW  - Differential equations
KW  - Topology
N1  - "Unabridged republication of the second (1963) edition of the work originally published by Interscience Publishers in 1957 as volume VI of the Interscience pure and applied mathematics series."; Includes index; Bibliography: p. 376-385
ER  -