Columbia subject headings:
Harvard subject headings:
Birth control--England--History--Congresses.
Eugenics--England--History--Congresses.
Stopes, Marie, 1880-1958--Congresses.
Princeton subject headings:
Birth control--England--History--Congresses.
Eugenics--England--History--Congresses.
Stopes, Marie Carmichael, 1880-1958--Congresses.