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