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Losses from roundworm infestation in sheep in south-west Africa average about 3-6% yearly. E. notes that most farmers rely on dosing as a means of control, but points out the importance of precautionary measures for the avoidance of infestation, to be practised in addition to dosing. These are...

Enigk, K.
Zeitschrift fur Infektionskrankheiten, Parasitare Krankheiten und Hygiene der Haustiere, 1941, 57, pp 119-138