Finding Books in Forestry There are two ways to finds books in
libraries--browsing the physical or virtual "shelf" in a library
or searching in a library catalog. In the sciences these books
may be either "primary" publications--conference proceedings,
technical reports, theses, and dissertations--or "secondary"
publications--textbooks, treatises, handbooks and similar
publications derived from the "primary" literature. This
research guide offers suggestions for both browsing and
searching. Library of Congress Classification System Using the
Library of Congress Classification System books in the general
collection and most special collections in the HSU Library are
assigned a specific call number which physically arranges them
on the shelf by subject. In addition ebooks are assigned these
same call numbers. Most academic libraries in the United States
use this classification system. For a general overview of the
entire classification system see Library of Congress
Classification Outline (Library of Congress).