Samba Wirahma 2019. Preface JSTMC Vol.20 No.1 June 2019 : Foreword and Acknowledgement. Jurnal Sains & Teknologi Modifikasi Cuaca. 20, 1 (Jun. 2019), iii-v. DOI:https://doi.org/10.29122/jstmc.v20i1.4065.