1. The Nutrient Requirements of Pigs;Agricultural Research Council,1981
2. Commisssion directive 98/64/EC;Anon.;Official J. Eur. Communities L,1998
3. Commisssion directive 2000/45/EC;Anon.;Official J. Eur. Communities L,2000
4. Chit: new facets of F research;Austin;Science,1981
5. Effect of dietary particle size on gastric ulcers, assessed by endoscopic examination between ulcer severity and growth performance of individually fed pigs;Ayles;Swine Health Prod.,1996