1. Anthelmintic treatment of dairy cows for ostertagia infection;Anon;Vet. Rec.,1978
2. Arrested development in cattle nematodes with special reference to Ostertagia ostertagi;Armour,1978
3. Milk production of grazing dairy cattle after a single anthelmintic treatment;Barger;Aust. Vet. J.,1979
4. Das Vorkommen von Magendarmwürmern bei Milchkühen;Barth;Berl. Münch. Tierärztl. Wochenschr.,1981
5. The epidemiology of gastrointestinal helminth-infections in young cattle in The Netherlands;Borgsteede,1977