1. Farmacognosia;Capasso,1982
2. Problems and prospects of discovering new drugs from higher plants by pharmacological screening;Farnsworth,1977
3. Biological and phytochemical evaluation of plants. Biological test procedures and results from two hundred accessions;Farnsworth;Lloydia,1966
4. Pharmacological approaches to natural product screening and evaluation;Malone,1977
5. I principi attivi delle piante medicinali;Morelli,1981