@book{336757,
	author = {Schoning, E. and 1. Simposio do Tropico Umido},
	title = {Effects of different mulch material on soil properties and yield of maize (Zea mays)and cowpea (Vigna unguiculata)in an eastern amazon oxisol},
	series = {Documentos - Centro de Pesquisa Agropecuaria do Tropico Umido (Brazil)},
	note = {Anais do 1. Simposio do Tropico Umido v. 1 Clima e Solo
Belem, PA (Brasil): 1984. p. 474-485 [Summaries (En, Pt); 19 ref.]
(BR9404126-AMS)
}
}