Hälvä, S. “Studies on Production Techniques of Some Herb Plants: I Effect of Agryl P17 Mulching on Herb Yield and Volatile Oils of Basil (Ocimum Basilicum L.) and Marjoram (Origanum Majorana L.) ”. Agricultural and Food Science 59, no. 1 (January 1, 1987): 31-36. Accessed July 8, 2020. https://journal.fi/afs/article/view/72243.