Yield potential of cold-tolerant culinary herbs (Artemisia dracunculus, Levisticum officinale, Mentha x piperita, Agastache foeniculum) grown in different latitudes in Finland - Järvi, Aulis; Pessala, Raili; Hupila, Irma; Simojoki, Paavo; Huhta, Harri; Virri, Kalevi; Kemppainen, Riitta; Aflatuni, Abbas; Galambosi, Bertalan (Nordiska Jordbruksforskares Förening, 1994)