Catalyst, the Library Catalog - the guide to books and periodicals in the HSU Library. Most government documents are not included in Catalyst. Beginning in 1998, U.S. government documents are in Catalyst. If you are not looking for a particular book or if you do not know the author or title, you must look by subject. Books tend to treat a subject in depth but are generally not the most current source of information, especially in the rapidly changing areas of science and medicine.
Periodicals are usually the most current sources of research information in printed form.
However, periodical articles are not indexed in Catalyst. For information on how to search Catalyst, see Search Help . Articles in periodicals may be found by using Indexes and Abstracts . Listed below are the indexes and abstracts most appropriate for research in environmental systems. Indexes and abstracts vary in scope, depth and breadth of subject coverage.