Affiliation: | Chemistry Department, Chancellor College, University of Malawi, P.O. Box 280, Zomba, Malawi; University of Applied Science, Fulda, Marguardstrasse 35, 36039 Fulda, Germany; ICRAF, SADC-ICRAF Agroforestry Project, Chitedze Agricultural Research Station, P.O. Box 30798, Lilongwe, Malawi; Department of Home Economics, Chancellor College, University of Malawi, P.O. Box 280, Zomba, Malawi |