@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.},
}