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2. British Pharmacopoeia 1993 Her Majesties Stationary Office
3. British Pharmacopoeia (Veterinary) 1985 Her Majesties Stationary Office
4. Geophagy in New Guinea birds.;Diamond;Ibis,1999
5. Sodium glycodeoxycholate and spinability of gastrointestinal mucus: protective effect of smectite.;Droy-Lefaix;Gastroenterology,1985