TY  - BOOK
AU  - Spiegel,Murray R.
TI  - Schaum's outline of theory and problems of calculus of finite differences and difference equations
SN  - 0070602182
AV  - QA431 S75
PY  - 1971///
CY  - New York
PB  - McGraw-Hill
KW  - Ecuaciones diferenciales
ER  -