000
00247nam a2200109Ia 4500
008
220201s1960 xx 000 0 eng d
100
_a
Birks, Jb
245
0
_a
Modern dielectric material
260
_b
Heywond
_c
1960
300
_a
253
942
_2
ddc
999
_c
75217
_d
75217