TY  - BOOK
AU  - Batty,C D
TI  - An introduction to the seventeenth edition of the Dewey decimal classification
T2  - A programmed text
U1  - 025.431 
PY  - 1967///
CY  - London
PB  - Clive Bingley
KW  - Classification, Dewey decimal
KW  - Programmed instruction
ER  -