TY  - BOOK
AU  - Hurewicz,Witold
TI  - Lectures on ordinary differential equations
SN  - 9780486664200 (pbk. ): 
U1  - 515.4 23rd
PY  - 1990///
CY  - New York
PB  - Dover Publications
KW  - Differential equations
KW  - Mathematics
N1  - Includes bibliographical references and index
ER  -