Bioloby Today, Annotated Teacher's Edition, senior editorial advisors Tommy E. Wynn, Ph.D. and Mary E. Kayusa, published by Holt, Rinehart and Winston, copyright 1991, 990 pages, hardcover. This teacher edition contains information about Teacher Background and Resource Information and units about the Study of Living Things, the Cell, Continuity of Life, HIstory and Diversity of Life, Viruses and Monera, Protista and Fungi, Plants, Invertebrates, Vertevrates, Human Biology, Ecology, and more. The outside cover is in good condition with some wearing along the edges and corners. The pages are in good condition.