TY  - BOOK
AU  - Reuter,G.E.H.
TI  - Elementary differential equations and operators
U1  - 517.38 
PY  - 1959///
CY  - London
PB  - Routledge and Kegan Paul
KW  - Differential equations, Linear
KW  - Differential operators
N1  - Includes index
ER  -