权威例句
The Life History of Nematodirus helvetianus May, 1920, a Nematode Parasitic in CattleObservations on the pathogenic effects of Nematodirus helvetianus in dairy calves.Experimental infections of calves with the nematode, Nematodirus helvetianusDecapod crustaceans from the type area of the Helvetian Stage (lower Miocene) in the Bern area, SwitzerlandInvestigations into the free-living phase of the life-cycle of Nematodirus helvetianusOn the persistence of infective Ostertagia ostertagi, Cooperia oncophora and Nematodirus helvetianus on pastures.Efficacy of four endectocides against Nematodirus helvetianus in cattle: moxidectin, ivermectin, doramectin 1% injectable solutions ...Anthelmintic activities of fenbendazole against Nematodirus helvetianus in cattle: effect on egg production, embryogeny, and develop...Inhibited development of Ostertagia ostertagi, Cooperia oncophora, and Nematodirus helvetianus in parasite-free calves grazing fall ...Critical trials on the efficacy of thiabendazole against Ostertagia ostertagi, Cooperia oncophora, and Nematodirus helvetianus.