000 00311cas a2200133u| 4500
020 _axi,
050 0 0 _aRA565.A1
_bE57
245 0 0 _aEnvironmental health.
260 _c1971
_aNew york
_bAcademic press Inc
300 _axi,584p.
_bill.
650 0 _aEnvironmental health
700 _aPurdom,Walton P
942 _cBK
999 _c8310
_d8310