Columbia subject headings:
Antibiotics in animal nutrition.
Feed additive residues--Health aspects.
Hormones in animal nutrition.
Meat--Contamination.
Harvard subject headings:
Antibiotics in animal nutrition
Feed additive residues--Health aspects.
Hormones in animal nutrition.
Meat--Contamination
Princeton subject headings:
Antibiotics in animal nutrition.
Feed additive residues--Hygienic aspects.
Hormones in animal nutrition.
Meat--Contamination.