Igadna, Keban Carlo B. <br/><br/>
Instructional material in natural resources and environmental management / 
Keban Carlo B. Igadna. 
 - [Bayombong, Nueva Vizcaya] :  [Nueva Vizcaya State University],  2026. 
 - 60 leaves :   colored illustrations;   33 cm. +  e-copy. 
<br/><br/> Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural resources and energy.