@ARTICLE {GRAEFE:2017, title = {Evaluating farmers' knowledge of shade trees in different cocoa agro-ecological zones in Ghana}, author = {Graefe, S. and Meyer-Sand, L. F. and Chauvette, K. and Abdulai, I. and Jassogne, L. and Vaast, P. and Asare, R. }, journal = {Human Ecology}, year = {2017}, pages = {1--12}, issn = {0300-7839}, note = {WAHub; CRP CCAFS; Cocoa; Published online 09 March 2017}, doi = {10.1007/s10745-017-9899-0}, }