Drug-resistant malaria : the report of a meeting, Kuala Lumpur, Malaysia, 10-15 August 1981 / held under the auspices of the World Health Organization Regional Offices for South-East Asia and the Western Pacific, and the Scientific Working Groups on the Chemotherapy of Malaria and on Applied Field Research in Malaria of the UNDP/WORLD BANK/WHO Special Programme for Research and Training in Tropical Diseases ; edited by Walter Wernsdorfer