Agrogeology in Africa : proceedings of the seminar 23-27 June 1987, Zomba, Malawi.
Commonwealth Science Council.
International Development Research Centre (Canada)
London : Commonwealth Science Council,
1987.
"July 1987."
Organized under the auspices of the Commonwealth Science Council and the International Development Research Centre, in collaboration with the Commission of the European Communities and the Government of Malawi.
Includes bibliographies.
Phosphate fertilizers
Phosphate rock