Thanida Khanongnuch และ Thanida Khanongnuch;Alongkorn Muangwai. (2021) EFFICIENCY ENHANCEMENT AND REDUCING LOGISTICS COST WITH MATHEMATICAL MODEL OF AUTO PART INDUSTRY A CASE STUDY: P.E TECHNIC CO. LTD. IN PHITSANULOK PROVINCE. <i>Life Sciences and Environment Journal</i>, <i>22</i>(2), 205-215.Thanida Khanongnuch และ Thanida Khanongnuch;Alongkorn Muangwai. "EFFICIENCY ENHANCEMENT AND REDUCING LOGISTICS COST WITH MATHEMATICAL MODEL OF AUTO PART INDUSTRY A CASE STUDY: P.E TECHNIC CO. LTD. IN PHITSANULOK PROVINCE". Life Sciences and Environment Journal 22 (2021):205-215.Thanida Khanongnuch และ Thanida Khanongnuch;Alongkorn Muangwai. EFFICIENCY ENHANCEMENT AND REDUCING LOGISTICS COST WITH MATHEMATICAL MODEL OF AUTO PART INDUSTRY A CASE STUDY: P.E TECHNIC CO. LTD. IN PHITSANULOK PROVINCE. Pibulsongkram Rajabhat University:ม.ป.ท. 2021.