@BOOK {WEISE:2004, title = {The Sustainable Tree Crops Program: a new development paragdigm}, editor = {Weise, S. }, year = {2004}, address = {Washington DC, USA}, note = {Poster presented at a symposium on Theobroma cacao: ancient crop, medicinal plant, surprising future, at the National Academy of Science, 10 February 2004, Washington DC, USA}, }