Presents detailed discussions on the systematic, ecological, and evolutionary implications of the pollination of terrestrial orchids of Southern Australia and the Mediterranean; variation and diversity in deep-sea echinoids; the molecular evolution of the alcohol dehydrogenase genes in Drosophila;

This book is written by a New York City clinican who has worked with hundreds of crack cocaine patients individually and in group contexts. Drawing on her firsthand experience, Dr Barbara Wallace presents a practical treatment approach that was developed for crack patients but is generally applicable to chemical dependency problems.