000
00305nam a2200121Ia 4500
008
251112s9999||||xx |||||||||||||| ||und||
040
_a
CNCLSA
245
0
_a
Nature
_b
Physical Science
260
_c
March 6, 1972
_b
Macmillan Journal Limited
_a
U. S. A
300
_a
P.1-128
300
_b
V.236
942
_c
JRBV
999
_c
21880
_d
21880