- Welch, R. M
Welch, R. M (Nombre personal)
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Work cat.: (OSt)25365: Welch, R. M ed., Crops as Sources of Nutrients for Humans: Proceedings of a Symposium Sponsored by Divisions S-4 and C-6 of the Soil Science Society of America, Crop Science Society of Agronomy in Anaheim Calif., 28 nov - Dic 1982 / , 1984