The Buhi - Lalo irrigation system/
Beliber, Hilmar T.,
The Buhi - Lalo irrigation system/ Hilmar T. Beliber, Richard L. Borromeo, Dondie T. De Lima - Nabua, Camarines Sur : Camarines Sur Polytechnic Colleges ; 2004. - 51 leaves.
Undergraduate Thesis (BSCE) - Civil Engineering
The Buhi - Lalo irrigation system/ Hilmar T. Beliber, Richard L. Borromeo, Dondie T. De Lima - Nabua, Camarines Sur : Camarines Sur Polytechnic Colleges ; 2004. - 51 leaves.
Undergraduate Thesis (BSCE) - Civil Engineering