Machamacha, Alberto Filipe Antiviral potential of hadjod (cissus quadrangularis) extract against newcastle disease virus/ Alberto Filipe Machamacha. - Lusaka: The University of Zambia, 2023. - xi,48 pages: illustrations. Includes bibliographical references. Subjects--Topical Terms: Cissus quadrangularisNewcastle disease virus.Newcastle disease--Historical background.