TY  - BOOK
AU  - Simmons,George Finlay
TI  - Differential equations, with applications and historical notes
SN  - 0070575401 
U1  - 515.35 SIM 
PY  - 1991///
CY  - New York
PB  - McGraw-Hill
KW  - Differential equations
N1  - Includes bibliographical references and index
ER  -