000
00282nam a2200109 4500
008
160616s 000 0
245
_a
Introduction to spectral theory in hilbert space
100
_a
Helmberg, Gilbert
500
_a
B313N K91
942
_c
BK
_2
BK4765
080
_a
513.882 HEL
999
_c
4765
_d
4765