000 00294nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aGerald Berg
245 0 _aTransmission of viruses by the water route
260 _bInter Science pub
260 _c1965
365 _b121.18
942 _cBK
999 _c196907
_d196907