TY  - BOOK
AU  - Austin, Derek 
AU  - Butcher, Peter
TI  - Precis: : A rotated subject index system,
T2  - B.N.B. Marc documentation service publication
PY  - 1969///
CY  - London: 
PB  - British National Bibliography, 
KW  - Library science
KW  - PRECIS (Indexing system)
ER  -