s:191:"%T Guidelines for soil fertility management in Uganda 
%A Turetta, A.P. 
%A Monteiro, J.M. 
%A Novotny, E.H. 
%A de Carvalho, F. 
%A de Mattos, L.M. 
%A Medeiros, C.A. 
%A Lelei, D. 
";