Books are shelved on the second and third floors of the library, and are organized by Library of Congress call numbers. These call numbers are associated with certain subjects, so related books will be shelved closer together. Once you find a book that matches your research needs, try browsing in that same section to find more relevant books.
Here are some useful call number ranges and their associated subjects:
HD Industries, land use, labor
GE Environmental sciences
GF Human ecology
TD Environmental technology
TN Mining engineering
TP Chemical technology
Below is a select list of subject headings to try searching in the Goldstein Library Catalog. You'll want to try different search terms and strategies as your research develops.