000
00301nam a2200121 4500
008
160616s 000 0
245
_a
Masers and lasers
100
_a
Troup, gordon
440
_a
Methuens monographs on physical subjects
500
_a
C5:78 K3
942
_c
BK
_2
BK9154
080
_a
535.1 TRO
999
_c
9154
_d
9154