SOURCES OF PHYSICS INFORMATION ARE INCLUDED IN THIS GUIDE. IT WAS WRITTEN FOR STUDENTS AND TEACHERS OF PHYSICS, AT BOTH THE COLLEGE AND SECONDARY LEVELS, PHYSICISTS, LIBRARIANS, AND THE GENERAL PUBLIC. MATERIALS QUOTED WERE PUBLISHED PRIOR TO 1963 AND WERE SELECTED ON THE BASIS OF THE AUTHOR'S EXPERIENCE AS AN INFORMATION SCIENTIST. DEWEY DECIMAL CLASSIFICATION CLASS NUMBERS ARE INCLUDED FOR ALL MAJOR CATEGORIES OF LITERATURE CITED. REFERENCES DEALING WITH CAREERS IN PHYSICS AND GENERAL CATEGORIES OF LITERATURE WHICH INCLUDE BOOKS, DOCUMENTS, PERIODICALS, AND ABSTRACTS ARE DESCRIBED IN CHAPTERS 1-6. SECTIONS ON INDIVIDUAL TYPES OF PUBLICATIONS GENERALLY INCLUDE (1) BACKGROUND INFORMATION, (2) AN EXPLANATION OF HOW THE DOCUMENT IS USED, (3) A DISCUSSION OF ITS USEFULNESS, AND (4) SPECIFIC CITATIONS OF AVAILABLE MATERIALS. INFORMATION ON SCIENTIFIC SOCIETIES, RESEARCH ORGANIZATIONS, AND INFORMATION CENTERS IS INCLUDED IN CHAPTER 7. THE REMAINING CHAPTERS CONTAIN INFORMATION RELATED TO PARTICULAR AREAS OF PHYSICS. THESE ARE (1) RELATIVITY, QUANTUM MECHANICS, STATISTICAL MECHANICS, MATHEMATICAL PHYSICS, EXPERIMENTAL DESIGN, AND INSTRUMENTS, (2) MECHANICS AND SOUND, (3) OPTICS, (4) HEAT, (5) ELECTRICITY AND MAGNETISM, (6) ATOMIC, MOLECULAR, AND NUCLEAR PHYSICS, AND (7) CRYSTALLOGRAPHY AND X-RAY DIFFRACTION. GENERAL CATEGORIES OF PUBLICATIONS ARE DESCRIBED AND SPECIFIC WORKS ARE CITED FOR EACH SUBDIVISION. THIS DOCUMENT IS AVAILABLE FOR $2.95 FROM PERGAMON PRESS, INC., 44-01 21ST STREET, LONG ISLAND CITY, NEW YORK 11101. (AG)