Abstract
References
1.British Pharmacopoeia (1973 ) HMSO , London
2.European Pharmacopoeia (1971 ) vol 2 . Maisonneuve , Paris
3.European Pharmacopoeia (1977 ) vol 3
Suppl
Maisonneuve , Paris
4.British Veterinary Codex (1970 ) Suppl . Pharmaceutical Press , London