000 00270nam a2200109Ia 4500
008 161022s9999 xx 000 0 und d
100 _aNational Acadmy of scinnce
245 _aH alocarbons
260 _bNational Acadmy of secunce
_c1976
300 _a352
942 _cBK
999 _c45754
_d45754