000
00268nam a2200109Ia 4500
999
_c
18039
_d
18039
082
_a
RR 027.06762 GEH
100
_a
Gehrke, U.
245
0
_a
Planning for a national information and documentation system
260
_a
Paris
_b
Unesco
_c
1975
300
_a
55p.
942
_c
BK