"FDA's Bacteriological Analytical Manual (BAM) presents the agency's preferred laboratory procedures for microbiological analyses of foods and cosmetics."

"Microbial Life (ML) is a valuable addition to microbial ecology Web sites in the way it explains the wide variety of research areas and projects in the field. Funded by the National Science Foundation, ML is the product of collaboration between the Woods Hole Marine Biology Laboratory in Massachusetts and Montana State University in Bozeman, Montana. Other sites are geared to either much younger students or individuals already involved in the field. ML targets a broader audience: the general public, high school and undergraduate students, and teachers who need accurate, current information on microbial ecology without being overwhelmed by the complexity of the information presented.

Pages load quickly and exhibit a good balance between clear, readable text and excellent, informative micrographs. Major sections of this extremely well-organized site provide information about extremophiles and marine microbes, as well as the habitats of these intensely studied microbes. A section on microbial observatories lists numerous research sites around the world along with research findings and pictures from the research groups involved. ML serves as an excellent jumping-off point for those who wish to delve more deeply into this area of research. Users will also benefit from a section on research methodologies in microbial ecology. Brief, informative pages cover the major research methods in the field, with links to a variety of educational sites where more detailed information can be found. Teachers will find a section on teaching methods, sample teaching topics and tips, and case studies, as well as an exhaustive collection of links to a multitude of online sources including image collections and databases. Overall, this excellent, resource-rich site should prove to be an invaluable resource to anyone needing current information about microbial ecology." from Choice, June 2009.

SciTopics has humdreds of introductory articles about a wide variety of subjects written by experts in each discipline.  Unlike Wikipedia and some other sources, all of the articles on SciTopics have gone through a process of peer review and provide a scholarly introduction to a subject as well as give a variety of resources for further research.