Volume I is the full catalog, listing alphabetically by title the complete entry for each book owned by any of the EPA libraries. The title is printed in bold face type. Directly underneath, left justified, appears the call number (according to the Library of Congress Classification Scheme). At the far right of the same line is the publisher. The next line, in italics, reflects the author(s) and may be followed by an entry showing symposium data, subtitle, series, or other notes (not applicable to each title). The subject headings assigned to the book appear next, indented, one per line. The next line, indented still further, lists the code number for the holding library, pertinent volumes and/or editions, the date(s) of publication and, where appropriate, a call number used by holding library which differs from the Library of Congress classification.