ICAST International Conference on Advances of Science and Technology Search within this conference 2021 ICAST 2021 27-29 August Bahir Dar, Ethiopia Advances of Science and Technology 80 Papers 2 Volumes 2020 ICAST 2020 2-4 October Bahir Dar, Ethiopia Advances of Science and Technology 74 Papers 2 Volumes 2019 ICAST 2019 2-4 August Bahir Dar, Ethiopia Advances of Science and Technology 56 Papers 1 Volume 2018 ICAST 2018 5-7 October Bahir Dar, Ethiopia Advances of Science and Technology 48 Papers 1 Volume