@BOOKLET {MCNAMARA:2014, title = {Working with farmers to produce clean seed yams: YIIFSWA working paper series, No. 5}, author = {McNamara, N. and Morse, S. and IITA, }, year = {2014}, address = {International Institute of Tropical Agriculture}, howpublished = {YIIFSWA working paper series}, note = {ISBN 978-978-8444-38-1; RTB; Yam; 48p.}, }