“…Nitrate concentration of some domestic vegetables at Helsinki district market was studied during the summer and autumn months of the year 1984.The species were cabbage (Brassica oleracea var capitata), Chinese cabbage (Brassica pekinensis), kohlrabi (Brassica oleracea var gongylodes), turnip (Brassica rapa), carrot (Daucus
Carola subsp. sativas) and crisphead and butter head lettuce (Lactuca saliva var. capitata). …”
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