This book provides a detailed overview of micro-algal biotechnology; it discusses algae of current major importance and others with future commercial potential. The production and use of these organisms as sources of vitamins, pigments, polysaccharides, lipids, sterols and essential fatty acids are described in detail, as si their importance in animal feeds and aquaculture, agriculture, waste treatment and as a source of liquid fuels. Technical aspects of mass culture, cell harvesting and the future of genetic engineering are described, and an appendix details culture media. The book is made up of carefully edited contributions by internationally based and universally recognised experts and forms an invaluable account of a field of wide interest. The volume will be of particular interest to research workers and university teachers in microbiology, botany, marine biology and aquaculture, and research workers in the chemical industry.