TY  - BOOK
AU  - Puyaoan, Catherine Ariza A. 
TI  - A Comparative study on the antibacterial effect of crude oil and extract of betel nut (Areca catechu L.) 
PY  - 2006///
N1  - Thesis (BS Biology) -- Mariano Marcos State University-College of Arts & Sciences, Batac City; Bibliography: leaf 19
ER  -