Estoperez, Hector M., <br/><br/>
A study on the use of shale as a construction material/ 
Hector M. Estorpez, Niǫ A. Ibo 
 - Nabua, Camarines Sur :  Camarines Sur Polytechnic Colleges ;  1999. 
 - 59 leaves 
<br/><br/>Undergraduate Thesis (BSCE) - Civil Engineering