00710nam a22002051 4500 1/21635 040526s1980 enk b 0 11 eng d 0844402990 22310 GR-PeUP 025.4'9 LIB Library of Congress subject headings 9th ed. Washington : Library of Congress, 1980 2 v. ; 30 cm. V.1. A-Laser -- V.2. Laser-Z Subject headings, Library of Congress. Library of Congress. INST UNIPILB REF 20040709 025.4'9 LIB 00116977 00116977 NOLOAN v.1: 23 v.1 1 INST UNIPILB REF 20040709 025.4'9 LIB 00116978 00116978 NOLOAN v.2: 23 v.2 1