000 00269pam a2200109a 44500
082 _a625.7
_bN214SR NO.23
100 _aNational Research Council
245 1 _aSPECIAL REPORT
260 _aWashington
_bNational Research Council
_c
964 _gCIRC
997 _a70684 C
999 _c418177
_d418177