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Sieverding, E ,  Saif, SR ,  [VA mycorrhiza management : a new, low cost, biological technology for crop and pasture production on infertile soils] ,  VA mycorrhiza management : a new, low cost, biological technology for crop and pasture production on infertile soils

Salinas, JG ,  Saif, SR ,  [Nutritional requirements of Andropogon gayanus] ,  Nutritional requirements of Andropogon gayanus