Enlace original:
https://cgspace.cgiar.org/handle/10568/99934
Ezumah, H.C.
,
Lawson, T.L.
,
Federer, W.T.
,
Awa, N.E.
,
[Importance and sustainability of root cropsbased systems in subSaharan Africa]
,
Importance and sustainability of root cropsbased systems in subSaharan Africa