@BOOK {KANG:1996a,
title = {Sustainable agroforestry systems for the tropics; concepts and examples: IITA research guide, No. 26},
author = {Kang, B. T. },
series = {IITA research guide, No. 26},
year = {1996},
month = {October},
publisher = {International Institute of Tropical Agriculture (IITA)},
address = {Ibadan, Nigeria},
note = {25p.},
}