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THE external parasites, biting and sucking lice (particularly of calves) are the cause of much unthriftiness.
Article found at end of 'The importance of rapid and complete milking' K Needham
Department of Agriculture, Western Australia
"Control of lice on cattle,"
Journal of the Department of Agriculture, Western Australia, Series 4: Vol. 3:
9, Article 16.
Available at: https://library.dpird.wa.gov.au/journal_agriculture4/vol3/iss9/16