TY  - BOOK
AU  - Haykin,David Judson
ED  - Library of Congress.
ED  - Library of Congress.
TI  - Subject headings: a practical guide
AV  - Z695 .H36
U1  - 025.33 
PY  - 1951///
CY  - Washington, D.C.
PB  - U.S. G.P.O.
KW  - Subject headings
KW  - Local
N1  - At head of title: The Library of Congress
ER  -