@BOOK {CLAASSEN:1996a, title = {Gestion du materiel de labour dans les stations agricoles: Guide de recherche de l'Iita, No. 10}, author = {Claassen, S. L. }, series = {Guide de recherche de l'Iita, No. 10}, year = {1996}, month = {December}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, note = {36p.}, }