The Conservation of medicinal plants : proceedings of an international consultation, 21-27 March 1988, held at Chiang Mai, Thailand / edited by Olayiwola Akerele, Vernon Heywood and Hugh Synge ; organized by the World Health Organization, the World Conservation Union and the World Wide Fund for Nature
Akerele, Olayiwola, Heywood, Vernon H, Synge, Hugh, World Health Organization, World Conservation Union. et al. (1991). The Conservation of medicinal plants : proceedings of an international consultation, 21-27 March 1988, held at Chiang Mai, Thailand / edited by Olayiwola Akerele, Vernon Heywood and Hugh Synge ; organized by the World Health Organization, the World Conservation Union and the World Wide Fund for Nature. Cambridge : Cambridge University Press. http://www.who.int/iris/handle/10665/36877
