Books are often overlooked, but can be an excellent starting point to provide you with context, background, and big picture. And the references lead you to other great sources!
How to find e-books through the SCU Library:
Note: to see other items relating to environmental policy, in OSCAR (catalog), choose Subject from dropdown menu and enter your term: environmental policy, endangered species law, etc. Advanced Search offers more options. Or, click on Subject links in a title record.
To view results by date published, choose Sort > Date (newest first) from dropdown menu.
Some physical books are only available at the Mabie Law Library. Go to their website for more information: https://law.scu.edu/library/