000
00293nam a2200121Ia 4500
003
LDD
040
_c
LDD
041
_a
en
245
0
_a
Science
260
_a
American association for the advancement of science
_b
Washington
_c
1 Jan-31 Jan,1993
362
_a
259-259
_b
5091-5095
942
_2
ddc
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J
999
_c
190494
_d
190494