Book excerpt: The latest thinking and research on nutrients have been brought together by experts in the chemical and biological sciences and in engineering. The authors represent educational institutions, government, and industry. The book features a broad discussion of the topic. In addition to chapters on the three principal nutrients (nitrogen, phosphorus, and carbon), chapters on nutrient geochemistry and nutrient regeneration in hypolimnetic waters are included. Both chemical and bioassay analyses of nutrients are discussed by experts in their respective fields. Computer models of nutrient biochemical processes are described with the use of many illustrations, so that even those unfamiliar with computer techniques can appreciate their utility.