00588naa a2200205 a 450000100080000000500110000800800410001910000170006024500950007726000090017265000170018165000130019865300160021165300200022765300180024765300180026565300150028370000180029877300660031618007772017-04-20       1976    bl ---       0--  u    #d1 aWHITE, D. H.  aResidues of organochlorines and heavy metals in ruddy duchs from the Delaware River, 1973.  c1976  aMetal Pesado  aResíduo  aHeavy metal  aOrganochlorines  aOrganoclorado  aPato selvagem  aRuddy duck1 aKAISER, T. E.  tPesticide Monitoring Journalgv.9, n.4, p.155-156, Mar. 1976.