TY  - BOOK
AU  - Halmos,Paul R
TI  - A Hilbert space problem book
T2  - University series in higher mathematics
U1  - 515.73 18
PY  - 1967///
CY  - London
PB  - Van Nostrand
KW  - Hilbert space
KW  - Hilbert, Espacio de
ER  -