@BOOK {COUPER:1995e,
title = {Techniques de defrichage dans les stations agricoles experimentales: Guide de recherche de l'Iita, No. 5},
author = {Couper, D. C. },
series = {Guide de recherche de l'Iita, No. 5},
year = {1995},
month = {March},
publisher = {International Institute of Tropical Agriculture (IITA)},
address = {Ibadan, Nigeria},
note = {17p.},
}