Mwamba, Christine Chibale Prevalence and co-occurence of substance use in mental helth patients at Lewanika general hospital / Christine Chibale Mwamba - Lusaka : The University of Zambia, 2023 - xii, 39 pages : illustrations. Includes bibliographical references. Subjects--Topical Terms: Mental Health--Substance use--Mental Patient--Mental retardation.