"Sustaining soil fertility in West Africa : proceedings of a symposium sponsored by Divisions S-4, S-8, and A-6 of the Soil Science Society of America and the American Society of Agronomy. The papers were presented during the annual meeting in Minneapolis, Minnesota, 5-9 November 2000"
"Sustaining soil fertility in West Africa : proceedings of a symposium sponsored by Divisions S-4, S-8, and A-6 of the Soil Science Society of America and the American Society of Agronomy : the papers were presented during the annual meeting in Minneapolis, Minnesota, 5-9 November, 2000"@en
"Sustaining soil fertility in West Africa proceedings of a symposium sponsored by Divisions S-4, S-8, and A-6 of the Soil Science Society of America and the American Society of Agronomy : the papers were presented during the annual meeting in Minneapolis, Minnesota, 5-9 November, 2000"@en
"Sustaining soil fertility in West Africa proceedings of a symposium sponsored by Divisions S-4, S-8, and A-6 of the Soil Science Society of America and the American Society of Agronomy : the papers were presented during the annual meeting in Minneapolis, Minnesota, 5-9 November, 2000"
"Sustaining soil fertility in West Africa : proceedings of a symposium sponsored by Divisions S-4, S-8, and A-6 of the Soil Science Society of America and the American Society of Agronomy. The papers were presented during the annual meeting in Minneapolis, Minnesota, 5-9 November, 2000"