na INLIS000000000003971 Ind 0010-1118003971 Time related changes of organic and inorganic nitrogen and other interrelationships in the southern north sea of the Dutch coast: a statistical analysis PIETERS, H. H. Pieters; H.B. Becker [Amsterdam] International Council for the Exploration of the Sea 1984 24 p.: ill.; 30 cm. 24 p.: ill.; 30 cm. 546.17 COASTS NITROGEN COMPOUNDS 455/95