Gr 8-12 A well-written overview of biotechnology. Citing frequent media usage of terms such as ``cloning, de signer genes and gene splicing,'' Gross' stated intention is to explain new vo cabulary and to clear up misunder standings about a rapidly-growing new field. The detailed text includes topics of historical importance as well as ex amples drawn from current applica tions and research. Attention is also given to the moral and ethical conse quences of genetic engineering. A par ticularly important section deals with the increasing conflict between aca demic research goals and more prag matic business interests. Although the presentation is straightforward and well-organized, some of the material will be difficult for students who lack at least a rudimentary knowledge of mo lecular biology. The first chapter, for example, which deals with basic con cepts, is somewhat esoteric. However, Gross' lucid style and the availability of a glossary help here. The remaining sections of the book, which cover ad vances in industry, medicine, agricul ture, and environmental science, are more readable. Numerous color and black-and-white illustrations are in cluded. Diagrams are especially clear and understandable. Sue A. Norke liunas, Arlington Senior High School, LaGrangeville, N.Y.