Igadna, Keban Carlo B. Instructional material in principles of agricultural entrepreneurship and marketing / Keban Carlo B. Igadna. - [Bayombong, Nueva Vizcaya] : [Nueva Vizcaya State University], 2026. - 56 leaves : colored illustrations ; 33 cm. + e-copy. Includes bibliographical references. Subjects--Topical Terms: Entrepreneurship.