TY  - BOOK
AU  - Pattison, Gordon L.
TI  - Periodontal instrumentation: a clinical manual 
SN  - 879096047
AV  - RK 361 .P35 1979  
PY  - 1979///
CY  - [Place of publication not identifed]
PB  - [publisher not identified]
N1  - Periodontal instrumentation : a clinical manual, Periodontal
ER  -