Phillips, W. Howard. A primer of book classification / W. Howard Phillips - 5th ed. - London, Association of Assistant Librarians, 1961 - 232 p. 23 cm. LCCN: 63003446 Nat. Bib. No.: GB62-1921 Subjects--Topical Terms: Classification--Books. LC Class. No.: Z696 / .P56 1961 Dewey Class. No.: 025.4/ P544p