000 00358nam a2200121Ia 4500
008 140113s9999 xx 000 0 und d
082 _a574:6:546.16:551.5 L1
100 _aNational Academy of Sciences
245 _aFlorides-Biologic effects of atmospheric pollutants
260 _a1971
_bNational Academy of Science
_cU.S.A.
300 _a295
942 _cBK
999 _c57909
_d57909