1. Herbal Medicine;Chavez,2000
2. Tyler’s Honest Herbal;Foster,1999
3. Herbals and Other Dietary Supplements in the United States. Part I. Dietary Supplement Regulations: Impact on Pharmacy;Chavez,2000
4. Complementary Therapies for Health Care Providers;Kuhn,1999
5. Economic Characterization of the Dietary Supplement Industry. Final Report. Contact No. 223-96-2290: Task Order 3;Muth,1999