000
00267nam a22000977a 4500
008
230725b |||||||| |||| 00| 0 eng d
040
_a
National Science Library
_c
National Science Library
245
_a
Bll Conference Index 1964-1973
260
_c
1964
942
_c
BK
_2
udc
999
_c
63812
_d
63812