1 The imposition of quotas or tariffs on foreign imports by a government: to become self-sufficient, to protect new industries, or as a bargaining tool. See Bai et al. (2003) W. Davidson W. Paper 565, and Young (2000) Quart. J. Econ. 115, 4 on China.
2 A form of copyright; European legislation has provided legal protection to designated regional foods. See Parrot et al. (2002) Eur. Urb. & Reg. Studs 9, 3, 241.