000
00307nam a2200121Ia 4500
008
220201s1999 xx 000 0 eng d
041
_a
ENG
100
_a
JOHN,GOWER
245
0
_a
OPTICAL COMMUNICATION SYSTEM
260
_a
LONDON
_b
THAMES AND HUDSON PUBLISHING COMPANY
_c
1999
300
_a
696
942
_2
ddc
999
_c
61943
_d
61943