Chan, Zachary Loyalty through ecosystem/ Zachary Chan. - Quezon City: Hardware Zone Phils. Corp., ©2015. - v11 i6, page 13; 30 cm. HWM Philippines. ISSN: 16565649 Subjects--Topical Terms: Ecology Dewey Class. No.: DPer. 303.405 May-Sept 2015 n. 6-10