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- [29] STUDIES IN NITROGEN-FERTILIZATION AND SPRINKLER IRRIGATION TO ALLUVIAL GRASSLAND ALONG THE MIDDLE COURSE OF THE ELBE RIVER .3. NITROGEN RATE AND FEED QUALITY ARCHIV FUR ACKER UND PFLANZENBAU UND BODENKUNDE-ARCHIVES OF AGRONOMY AND SOIL SCIENCE, 1987, 31 (06): : 423 - 428