TY  - BOOK
TI  - Theory of linear operators in Hilbert space 
SN  - 0486677486 (pbk.) :
PY  - 1993///
CY  - New York
PB  - Dover Publications
N1  - Originally published: New York : F. Ungar Pub. Co., c1961-c1963. | Two volumes bound as one."
ER  -