The UNH Library's home page has an open search box for "Articles, Books, Media & More" -- this searches many databases, including most of the UNH Library Catalog. Article titles, book titles, authors, keywords, subjects, can all be searched.
The UNH Library Classic Catalog includes materials owned and accessible through the UNH Library at Durham and the UNH-Manchester Library. This is the best way to access UNH's online resources, like e-books, and to find physical materials in our locations.
You can switch to the Books & Media Worldwide catalog to find out about materials beyond UNH and request books and media to be delivered from other college and university libraries via InterLibrary Loan (ILL).
The latter two library catalogs include journal titles and magazine titles as well as book titles, but NOT article titles. To see if an article is available at UNH, use the UNH Library Classic Catalog on the home page to look up the journal's title.
Example:
The library has thousands of individual e-books and some major e-book collections, including those below. The UNH Library Classic Catalog includes every e-book accessible via UNH.
Click on the subjects below to search the UNH Library Catalog. After you search, you can narrow most any search. Click on the Limit/Sort Search Icon in the catalog: 
and choose limits or add words. Choices include: library location, year of publication, words in title or author, material type, etc.
Specialized reference resources provide authoritative information on processes, properties, data, and instrumentation. At UNH, these may be in print or online. Depending on what you need, it can save a lot of time to consult your subject librarian! Types of reference resources include:
Resources listed on this page are divided among online and print access.
UNH uses the Library of Congress (LC) system, like most academic libraries. Here is a clickable outline of the categories and call numbers. Call numbers are read line by line:
TD
146
.W45
Note: In .W45 the 45 is a decimal number. The letter W stands for the author (or title if no author).
Example of the order:
TD TD TD
146 146 146
.W427 .W45 .W5
Breaking a subject down into subtopics:
Remember, all books should be in the catalog, so you can browse there also.
Kirk-Othmer encyclopedia of chemical technology, 5th ed.
Perry's Chemical Engineers' Handbook, 9th ed.
Standard handbook of environmental engineering, 2nd ed. by 
Handbook of chemical technology and pollution control, 3rd ed. by 
Environmental technologies handbook by 
CRC handbook of chemistry and physics
Standard methods for the examination of water and wastewater by 
Environmental instrumentation and analysis handbook by