De Lima, Dennis T., <br/><br/>
Improvised soil boring sampler for nowadays/ 
Dennis T. De Lima, Dominic S. Regaspi, Michael Jay T. Tangtang 
 - Nabua, Camarines Sur :  Camarines Sur Polytechnic Colleges ;  2014. 
 - 89 leaves. 
<br/><br/>Undergraduate Thesis (BSCE) - Civil Engineering