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- [6] AVAILABILITY AND ABSORPTION OF CALCIUM AND PHOSPHORUS IN YOUNG GROWING PIG ANIMAL PRODUCTION, 1972, 15 (DEC): : 265 - +
- [10] Plant-availability of phosphorus recycled from pig manures and dairy effluents as assessed by isotopic labeling techniques Morel, C., 1600, Elsevier B.V., Netherlands (232-234):