TY  - BOOK
ED  - National Library of Medicine
TI  - Medical subject heading
PY  - 1960///
CY  - Washington
PB  - U.S. Department of Health, Education and Welfare
KW  - BibliotecologÃ­a
KW  - Encabezamientos de materia
KW  - IndizaciÃ³n
KW  - Medicina
KW  - Libro
ER  -