000 00302nam a2200133Ia 4500
008 170324s9999 xx 000 0 und d
082 _a628.535
100 _a"Wilkening, M."
245 0 _aRadon in the environment
260 _bElsevier Science B.V.
260 _c1990
365 _b0.00
942 _cBK
999 _c4960
_d4960