pictorial works

Photographs taken during the author's visits to both large and small zoos.

Illustrations of 500 wild flowers of North America with brief text, including common and botanical names, descriptive information and geographical location.

Twenty-three full-color, labeled photographs of tools include paintbrush, screwdriver, trowel, and pliers.

Surveys various aspects of biology, including reproduction, genetics, human physiology, and ecology, through reproducible diagrams and drawings.