Rogers, 1999. Grange Research Centre, Dunsany, Ireland Document reference Rogers, P., 1999. Poisoning in cattle and sheep by urea, nitrates and nitrites: Sources, toxic doses, treatment and prevention. Grange Research Centre, Dunsany, IrelandWeb http://homepage.eircom.net/~progers/ureanitr.htmCitation key Rogers, 1999Datasheets Straws