Vol. 47 (996)p.; Content: v.36 1980, v.35 1981, v.37 1983, v.41 1987, v.33 1979, v.40 1986, v.39 1985, v.44 1990, v. 38 1984, v.42 1988, v.48 1994, v.49 1995, v.43 1989, v.46 1992, v.47 1996 Includes index Microbiology *