000 00326nam a2200121Ia 4500
001 MPKV058906
008 120911s9999 xx 000 0 und d
082 _a631.7
245 _aWater Services Vol.79 No.947-56
_c;
246 _aWater Services Vol.79 No.947-56
260 _aLondon
_bJohn Adam House
_c1975
650 _aEntomology
999 _c56894
_d56894