000
00292pam a2200121a 44500
010
_a
63060053
082
_a
530.6
_b
N21N V.38
100
_a
National Research Council
245
1
_a
NUCLEAR GEOPHYSICS
260
_a
_b
National Academy Of Sciences
_c
1963
964
_g
CIRC
997
_a
59599 C
999
_c
410840
_d
410840