John 1830-1913 Phin - Böcker

Trichinae (pork Worms, or Flesh Worms)

How to Detect Them and How to Avoid Them: Being a Popular Account of Their Habits, Modes of Propagation, and Means of Dissemination, Intended for the Use of Farmers, Butchers, Pork Dealers, and Consumers of Pork