Subject headings used in the dictionary catalogs of the Library of Congress / - Washington : Government Printing Office, 1951 - 3 v. ; 23 cm
v. 1. Supplement january-june 1951. -- v. 2. Supplement july-september 1951. -- v. 3. Supplement july-november 1951
ENCABEZAMIENTOS DE MATERIA
025.33
v. 1. Supplement january-june 1951. -- v. 2. Supplement july-september 1951. -- v. 3. Supplement july-november 1951
ENCABEZAMIENTOS DE MATERIA
025.33
