@BOOK {BUTLER:1996,
title = {Landscape design on research stations: IITA research guide No. 8},
author = {Butler, A. C. },
series = {IITA research guide, No. 8},
year = {1996},
month = {October},
publisher = {International Institute of Tropical Agriculture (IITA)},
address = {Ibadan, Nigeria},
note = {15p.},
}