"Slavery." . . "Slavery Guyana." . . . . . . . . . . . . . . "Considerations on Negro slavery; : with a brief view of the proceedings relative to it, in the British Parliament"@en . . . . . . . . . "Considerations on Negro slavery with a brief view of the proceedings relative to it, in the British Parliament"@en . "Considerations on Negro slavery with a brief view of the proceedings relative to it, in the British Parliament" . . . . . "Considerations on Negro slavery"@en . "Considerations on Negro slavery" . . . . . "Considerations on Negro slavery with a brief view of the proceedings relative to it in the British Parliament"@en . . . . . . . . . . . "Slaves Emancipation West Indies, British." . . . .