TY  - BOOK
AU  - Esser,Martinus.
ED  - Martinus Esser
TI  - Differential Equations
U1  - 515.35 DIF 1968 
PY  - 1968///
CY  - Japan
PB  - W.B Saunders company
N1  - Including Index; Liner differential equations -- Numerical methods and series
ER  -