Origanum dictamnus L. and Origanum vulgare L. subsp. hirtum (Link) Ietswaart: Traditional uses and production in Greece - Skoula, M; Kamenopoulos, S. (Proceedings of the IPGRI International Workshop on Oregano, 8.-12.05.1996, CIHEAM, Valenzano, Bari, Italien; S)