TY  - BOOK
AU  - Dumayas, Roderic D., Pumaras, Elwin A., Tolentino, Adrian A. 
TI  - The effect of black sand as a fine aggregate for concrete
PY  - 2008///
N1  - Thesis (BS Civil Engineering) -- Mariano Marcos State University-College of Engineering, Batac City; Bibliography: leaf 30
ER  -