If an e-book, the link should take you directly to the book.
Find books on the Library site (http://www.library.umass.edu)
Use one book to find others
When you find one useful book, look at the Subject(s) assigned to it; if you see a Subject that looks good, click it to see other titles with the same subject.
Borrow books from other libraries
Specific or general terms?
Specific terms give fewer but more precise results:
General terms give more hits, but a lower ratio of useful ones:
Specific terms may miss a book with just a chapter on your topic.
To broaden your search
Add words with similar or broader meanings.
E.g., use both scientific and common names for organisms, connected with OR:
Northern Flicker or Colaptes auratus
NOTE:Scientific names sometimes change!
Use wildcards (the asterisk *) in Keyword searches
forest* will find forest, forests and forestry
and variant spellings (colour, grey/gray)