Nye, P. H.
Soil under shifting cultivation - 1st ed. - England Farnham Royal 1960 - 156p.
Includes bibliographies
Soil fertility
631.45 / NYE/1960
Soil under shifting cultivation - 1st ed. - England Farnham Royal 1960 - 156p.
Includes bibliographies
Soil fertility
631.45 / NYE/1960