TY  - BOOK
AU  - Merrill,William Stetson
ED  - American library association.
TI  - Code for classifiers: principles governing the consistent placing of books in a system of classification 
U1  - 025.4 23
PY  - 1939///
CY  - Chicago
PB  - American library association
KW  - Classification
KW  - Books
N1  - Include index
ER  -