Columbia subject headings:
Botany--Bibliography--Catalogs.
Horticulture--Bibliography--Catalogs.
Harvard subject headings:
Botany--Bibliography--Catalogs
Horticultural Society of New York--Catalogs.
Horticulture--Bibliography
Horticulture--Bibliography--Catalogs.
Horticulture--Catalogs.
Princeton subject headings:
Botany--Bibliography--Catalogs.
Catalogs.
Horticulture--Bibliography--Catalogs.