Download or read book Physics and Astronomy Classification Scheme written by and published by . This book was released on 2001 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: PACS is designed to classify and categorize the literature of physics and astronomy. It enables indexes and databases from all of physics, astronomy and related fields to be cumulated together and searched efficiently under a single coherent scheme. Revised editions published biennially, or as necessary, by AIP.