TY  - BOOK
AU  - Korb, Donald R.
TI  - The Tear film : structure, function and clinical examination
SN  - 0750641967
U1  - 617.7075 
PY  - 2002///
CY  - Oxford
PB  - Butterworth-Heinemann
KW  - OPHTHALMOLOGY
KW  - Diagnosis
ER  -