Calf Ear Notchers Stone Manufacturing Company - Medical Surgical | Instruments | Equipment Supplies
Earmark (agriculture) - Wikipedia
Livestock identification part 2 – ProAgri Media
Bulletin of the U.S. Department of Agriculture. Agriculture; Agriculture. Fig. S.—Methods of marking sheep: a, Ear label; b, notching; c, tattooing. inserting the labels to insure their ears healing properly. The