000
00297nam a2200121 4500
008
160616s 000 0
245
_a
Wave guides
100
_a
Lamont, H R L
440
_a
Methuens monographs on physical subjects
500
_a
C5:8M6 J9
942
_c
BK
_2
BK9167
_0
1
080
_a
538 LAM
999
_c
9167
_d
9167