Left-A hard-moulded teat-cup inflation after one season's use, showing perished surface due to the penetration of fat. Right-The same type of inflation as that at left after two years' use during which it was treated by the boiling water-caustic soda method.
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https://paperspast.natlib.govt.nz/periodicals/NZJAG19491115.2.35.8
Bibliographic details
New Zealand Journal of Agriculture, Volume 79, Issue 5, 15 November 1949, Page 491
Word Count
41Left-A hard-moulded teat-cup inflation after one season's use, showing perished surface due to the penetration of fat. Right-The same type of inflation as that at left after two years' use during which it was treated by the boiling water-caustic soda method. New Zealand Journal of Agriculture, Volume 79, Issue 5, 15 November 1949, Page 491
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