TY  - BOOK
AU  - Henrici,Peter, x
AU  - x
TI  - Discrete variable methods in ordinary differectial equations: x
SN  - x
U1  - 517.38/HED 
PY  - 1968///
CY  - N.Y.
PB  - Wiley
KW  - Calculus
N1  - x
ER  -