1. Bioactive microbial products: search and discovery;Bu'Lock,1982
2. Microbial screening, selection and strain improvement;Elander,1987
3. Biotechnology in industrial antibiotics;Vandamme,1984
4. Discovery and isolation of microbial products;Verrall,1985
5. Philosophy of new drug discovery;Ōmura;Microbiol. Rev.,1986