20210206214000.0 Open journal of science and technology (Online) http://readersinsight.net/OJST Open journal of science and technology (Online) Open journal of science and technology. Pakistan 2664-7974 pkppln Public Knowledge Project PLN 2018/2022 2024-03-27 Preserved : 1 to 5 Preserved : 1; 2 (2 to 4); 3 (1 to 4); 4 (1, 3); 5 (1) Preserved Readers insight Publisher Open Journal of Science and Technology 2664-7974 2664-7974 2664-7966 2664-7974 Open journal of science and technology. 2664-7974