000 00292pam a2200121a 44500
010 _a63060053
082 _a530.6
_bN21N V.38
100 _aNational Research Council
245 1 _aNUCLEAR GEOPHYSICS
260 _a
_bNational Academy Of Sciences
_c1963
964 _gCIRC
997 _a59599 C
999 _c410840
_d410840