I ran across enough materials while researching AZOrange that I needed to make a separate post on QSAR:
The Cheminformatics and QSAR Society
An Introduction to QSAR Methodology by Allen B. Richon
Quantitative structure-activity relationship – Wikipedia
Of greatest interest for people involved in cheminformatics, toxicity, drug development, etc.
Subject identity cuts across every field.
Now that would be an ambitious and interesting book, “Subject Identity.” An edited volume with contributions from experts in a variety of fields.