Columbia subject headings:
Horticultural journalism--Great Britain--History--Congresses.
Horticultural writers--Great Britain--Biography--Congresses.
Landscape gardening--Great Britain--History--Congresses.
Loudon, J. C. (John Claudius), 1783-1843--Congresses.
Harvard subject headings:
Horticultural journalism--Great Britain--History--Congresses.
Horticultural writers--Great Britain--Biography--Congresses.
Landscape gardening--Great Britain--History--Congresses.
Loudon, J. C. (John Claudius), 1783-1843--Congresses.
Princeton subject headings:
Horticultural journalism--Great Britain--History--Congresses.
Horticultural writers--Great Britain--Biography--Congresses.
Landscape gardening--Great Britain--History--Congresses.
Loudon, J. C. (John Claudius), 1783-1843--Congresses.