1. Miscellaneous labour and materials saving methods;Adams,1989
2. Introduction and statistics for microbiologists, course manual. Statistics for Industry;Anon,1989
3. A microbiological quality control procedure based on tube counts;Aspinall;J. Appl. Bacteriol.,1979
4. Experiments on the accuracy of surface drop bacterial counts;Badger;J. Appl. Bacteriol.,1960
5. Enrichment techniques for Staphylococcus aureus;Baird,1982