TY  - BOOK
AU  - Macphee, Torquil.
AU  - Cowley, Geoffrey.
TI  - Essentials of Periodontology and Periodontics / 
U1  - 617.632 
PY  - 1981///
CY  - London : 
PB  - Blackwell Science Ltd. , 
KW  - Periodontology
ER  -