Columbia subject headings:
Antislavery movements--Congresses.
Brussels. Conference, (1889-1890)
Brusselsche Anti-Slavernij Conferentie (1889-1890)
Slave trade--Congresses.
Slave trade.
Harvard subject headings:
Antislavery movements--Congresses.
Brusselsche Anti-Slavernij Conferentie (1889-1890)
Slave trade--Congresses.
Princeton subject headings: