00988nam a2200217Ia 4500 0000015131 20251012174503.0 881129s1989 eng 0844406317 pj Z696U5Q Library of Congress Classification. Class Q. Science Subject Cataloging Division, Processing Services, Library of Congress 7th ed. Washington : The Library of Congress 1989 736 p. Kept up to date by the division's L.C. classification--additions and changes, and by two publications irregularly issued by Gale Research Company entitled: Library of Congress classification schedules--a cumulation of additions and changes, Class Q an d Library of Congress classification schedules combined with additions and changes. Classification, Library of Congress Periodicals Classification Books Science Class Q Science 4541 4541 0 0 0 0 KEM KEM 2012-12-07 0 0000006818 2025-10-12 08:35:37 2025-10-12 OS