Journal of Development Research

E-ISSN: 2579-9347

P-ISSN: 2579-9290


Journal of Development Research is an international journal, published by the Institute for Research and Community Services Universitas Nahdlatul Ulama Blitar. The journal facilitates the publication of research results in the field of human and international development for three sections, including engineering and technology, mathematics and natural science, and also education and social science. This journal is published in two versions, printed and electronic in May and November.

Since December 2019, the journal has been ACCREDITATED with SINTA 4 by the Ministry of Research, Technology and Higher Education (Ristekdikti) of The Republic of Indonesia as an achievement for the peer-reviewed journal which has good quality in management and publication. The recognition published in Director Decree No. 36/E/KPT/2019 December 13, 2019 effective until 2023.

Vol 4 No 2 (2020): Volume 4, Number 2, November 2020

Volume 4, Number 2, November 2020

Published: 2020-11-30

The Utilization of Waste Cooking Oil As a Material of Soap

Mustakim Mustakim, Rahmad Taufik, Trismawati Trismawati


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