1. AOAC 1990 Official Methods of Analysis, Food Compositions; Additives, Natural Contaminants 15 th Edition 2 AOAC FD
2. AOAC 1990 Official Methods of Analysis, Food Compositions; Additives, Natural Contaminants 15th Edition 2 AOAC FD
3. AOAC 1990 Official Methods of Analysis, Food Compositions; Additives, Natural Contaminants 15th Edition 2 AOAC DAADBSA FD