Van Wyk, B-E., Van Oudtshoorn, B., and Gerike, N., Medicinal Plants of South Africa, Briza Publications,
Pretoria, South Africa, 1997. (VVG)
Wagner, H., Gerhauser, C., and Samtleben, R., Bioactive polymers from higher plants. In: Hostettmann et al.,
Eds., Phytochemistry of Plants Used in Traditional Medicine, Oxford Science Publications, New York,
1995.
Watt, G., Dictionary of the Economic Products of India, 6 vols., Nav Bharat Offset Process, Delhi, India,
1889–1892, reprint 1972. (DEP)
Watt, J.M. and Breyer-Brandwijk, M.G., The Medicinal and Poisonous Plants of Southern Africa, E.&S.
Livingstone, Ltd., Edinburg & London, 1962. (WBB)
Weiss, R.F., Herbal Medicine, translated from the 6th German ed., Lehrbuch der Phytotherapie, by A.R.
Meuss, Beaconsfield Publisher’s Ltd, Beaconsfield, UK, 1988. (RFW)
Werbach, M., Healing with Food, Harper Collins, New York, 1993. (WER)
White, L.B. et al., The Herbal Drugstore, Rodale Press, Emmaus, PA, 2000. (WAF)
White, L.B. and Mavor, S., Kids, Herbs, Health — A Parent’s Guide to Natural Remedies, Interweave Press,
- (WAM)
Wichtl, M., Teedrogen. Ein Handbuch fur Apotheker und Arzte, Wissenschaftliche Verlagsgesellscharft, MBH
Stuttgart, 1984. (WIC)
Williamson, E.M. and Evans, F.J., Potter’s New Cyclopaedia of Botanical Drugs and Preparations, revised
ed., Saffron Walden, the C.W. Daniel Co., Ltd., Essex, UK, 1988, reprint 1989. (PNC)
World Health Organization, WHO monographs on selected medicinal plants, Vol. 1, World Health Organization,
Geneva, 1999. (WHO)
Wright, J. and Gaby, A., The Patient’s Book of Natural Healing, Prima Health, Rocklin, CA, 1999. (WAG)
Yanovsky, E., Food Plants of the North American Indians, U.S. Department of Agriciculture, Miscellaneous
Publication 237, 1936. (YAN)
Yarnell, E. and Meserole, L., Topical applications of botanical medicine, Alt. Comp. Ther., 2, 241–244, 1996.