TY - BOOK AU - Library of congress, Processing department ED - Library of congress, Processing department TI - Library of congress subject headings U1 - 2:55, L5.2-;4,L51-;4 PY - 1975/// CY - N York PB - Library of congress Washington KW - LIBRARY SCIENCE N1 - Contents Vl (lxxxi, 974p.) V2 (975-2026p.) ER -