TY  - BOOK
AU  - Balicao, Narly D. 
TI  - Nitrate level analysis of the groundwater in cropped lands in San Marcelino, Dingras, Ilocos Norte
PY  - 2008///
N1  - Thesis (BS Environmental Science) -- Mariano Marcos State University-College of Agriculture, Food and Sustainable Development, Batac City; Bibliography: leaves 24-25
ER  -