@book{2417,
	author = {International Board for Soil Research and Management (IBSRAM)},
	title = {Organic-matter management and tillage in humid and subhumid Africa : proceedings of the Third Regional Workshop of an AFRICALAND Programme held at Antananarivo, Madagascar 9-15 January 1990},
	publisher = {IBSRAM,},
	year = {1996}
}