000
00305nam a2200109Ia 4500
008
220201s1957 xx 000 0 eng d
100
_a
I.S.I
245
0
_a
IS 1034- 1957 Specifications for sound speakers systems for community radio recervirs
260
_b
I.S Insitute
_c
1957
300
_a
4
942
_2
ddc
999
_c
78684
_d
78684