Columbia subject headings:
Botanical literature.
Botany--Great Britain--History.
Herbs--Bibliography.
Harvard subject headings:
Botanical literature
Botany--Great Britain--History.
Botany--Pre-Linnean works
Herbs--Bibliography.
Materia medica, Vegetable.
Medicine, Medieval.
Princeton subject headings:
Botanical literature.
Botany--Great Britain--History.
Herbals--Great Britain--Bibliography.
Herbals--Great Britain--History.
Herbs--Bibliography.