000
00309 a2200133 4500
080
_a
6(072)
_b
U 58 I
245
1
_a
International aspects of technological innovation
260
_b
UNESCO
_c
1971
650
_a
Technological Innovation
700
_a
UNESCO
100
_a
_d
300
_a
89 p.
901
_a
144201
999
_c
75868
_d
75868