1. Simple liquid scrubber for large-volume air sampling;Buchanan;Appl. Microbiol.,1972
2. The plate count in aquatic microbiology;Buck,1979
3. Bioaerosols;Burge,1995
4. The Aerobiological Pathway of Microorganisms;Cox,1987
5. Chemical and Biological Defence Establishment (CBDE);Cox,1995