TY  - BOOK
AU  - Gehrig,
TI  - Foundations of Periodontics for the dental Hygenist
SN  - 978-1-60547-573-8
U1  - 617.632 
PY  - 2011///
CY  - Philadelphia
PB  - Lippincott Williams & Wilkins
KW  - Periodontology
ER  -