TY  - BOOK
AU  - Batty,C.D.
TI  - An introduction to the nineteenth edition of the Dewey decimal classification
SN  - 0851573037‬
U1  - 025.43 
PY  - 1981///
CY  - London
PB  - C. Bingley
KW  - Classification, Dewey decimal
KW  - Programmed instruction
N1  - Includes index
ER  -