Environmental Politics & Law: Books & eBooks

What is a subject heading?

Subject headings are a formalized way of of searching library catalogs. The right subect heading can help you get to information more quickly.

For example, US Presidents can be described using the following terms:

  • US Presidents
  • Presidents of the United States
  • American Presidents

You could search the library catalog for all those keywords. Or, use one subject heading to find all of the library's materials about US Presidents:

Presidents--United States.

Who determines subject headings? The Library of Congress. Copies of the complete set of the Library of Congress Subject Headings are available at the Reference Desk.

Browse for Books

Sometimes browsing the library stacks can help you find books you didn't even know you were looking for. The following are good areas to peruse. 

HD9502-9502.5: Energy industries. Energy policy. Fuel trade

JX: International law, international relations

JZ: International relations

JZ3686-3875: International Waters

K-KZ: Law

K3581-(3598); KB3127-3135; KBM3127-3134; KBP3127-3135: Environmental Law

Maps of the library are available at the 2nd floor Reference Desk, elevator lobbies, and also online.

Related Books

PSU Library Catalog - Book Search


Results include both print and ebooks, available from Portland State Library and the Summit Libraries.

Find Books by Subject

resource type limit options

After you execute a search in the Portland State Library catalog, click on the "books" facet to limit your search results to only books. Click on "eBooks" to limit your results to eBooks.


After you find a useful book, scroll down to the "Details" heading to find the book's "Subject Headings." Here you'll find a list of related subjects that you might consider adding to your search. You can also click on a subject link in the record, e.g. clicking on "Intergovernmental cooperation" would bring up a list of all the Library's books, journals, etc. on that topic.  

subject links in catalog record

Here is a list of subject headings linked to their respective searches in the catalog that may be of help to you.

Subjects in Environmental Law
Climatic Changes Energy Policy Environmental Law Envrionmental Law, International Environmental Mediation
Environmental Policy Environmental Policy, International Cooperation Environmental Protection Environmental Risk Assessment Forest Policy
International Law International Organization International Relations Natural Resources - Government Policy Public Contracts
Public Lands Public-Private Sector Cooperation Water-supply -- Government Policy    

Requesting Books We Don't Have

When you find an item in the catalog, under the Find & Request heading it might say, "Your search did not match any available resource in the PSU library." This means that the PSU Library does not own the item but can usually get it for you from another library.

Find and Request option for resources that are unavailable at P S U


In this case, you can request the item from a Summit library by clicking the "Request from Summit Libraries" link. 

Summit Libraries Find and Request option



If the item is not available from Summit, you can request it through interlibrary loan by clicking the "Request from Interlibrary Loan" link.

Inter Library Loan Find and Request Option

eBook Collections

We collect eBooks whenever possible. After you execute a search in the Portland State Library catalog, click on the "eBooks" facet to limit your search results to only ebooks.

resource type e book limit option

Records for eBooks look like this:
e book online access link


We also have a number of eBook collections that you can browse. They are listed below: