000 00357nam a2200121Ia 4500
999 _c5519
_d5519
020 _a113202547
100 _aDepartment of Health and Social Security
245 _aReports on Public Health and Medical Subjects No.71: The Bacteriological Examination of Water Supplies
250 _a4
260 _c1970
_bH..M.S.O
_aLondon
300 _aviii+52
942 _cREF