Columbia subject headings:
Aromatic plants--Indexes.
Aromatic plants.
Herbs--Indexes.
Herbs.
Medicinal plants--Indexes.
Medicinal plants.
Harvard subject headings:
Aromatic plants--Bibliography.
Aromatic plants--Indexes.
Aromatic plants.
Herbs--Bibliography.
Herbs--Indexes.
Herbs.
Medicinal plants--Bibliography.
Medicinal plants--Indexes.
Medicinal plants.
Princeton subject headings: