Raking through sludge exposes a stink.
Tollefson
Jeff
J
D000383:Agriculture / Q000941:ethics*; D000818:Animals; D002417:Cattle; D003612:Dairying; D004784:Environmental Monitoring; D005308:Fertilizers / Q000009:adverse effects* / Q000633:toxicity; D006801:Humans; D012722:Sewage / Q000009:adverse effects* / Q000032:analysis; D014481:United States; D014484:United States Environmental Protection Agency / Q000941:ethics*
D005308:Fertilizers; D012722:Sewage