If you're interested in a "deep piece" or a detailed aspect of microbiology, specifying the topic you're interested in could help narrow down the resources. For example, are you interested in bacterial physiology, virology, microbial ecology, or something else within microbiology?
General Microbiology by Hans G. Schlegel, particularly the seventh edition, is a foundational textbook for undergraduate biology that focuses on functional biochemistry, physiological diversity, and ecological impact. The work covers essential topics ranging from prokaryotic cell structure and metabolic pathways to microbial taxonomy, providing a concise overview suitable for students in microbiology, medicine, and biochemistry. More information is available via Cambridge University Press . general microbiology schlegel pdf top
The text is structured into deep dives across several microbiological pillars: If you're interested in a "deep piece" or