Komkham Pattanaporn <br/><br/>
Dental calculus deposition and its relation to caries-gingivitis and selected salivary factors in 12-year-old children in Chiang Mai, Thailand  [microform] :  / 
by Komkham Pattanaporn 
 - Birmingham, AL :  University of Alabama at Birmingham,  1994 
 - 2 microfisches ;  11x 15 cm.