Insect pollination improves yield of Shea (<i>Vitellaria paradoxa</i> subsp. <i>paradoxa</i>) in the agroforestry parklands of West Africa oleh Jane C Stout, Issa Nombre, Bernd de Bruijn, Aoife Delaney, Dzigbodi Adzo Doke, Thomas Gyimah, Francois Kamano, Ruth Kelly, Peter Lovett, Elaine Marshall, Latif Iddrisu Nasare, Adama Nana, Japheth Roberts, Prudence Tankoano, Cath Tayleur, David Thomas, Juliet Vickery, Peter Kwapong