Culturing Microalgae from Nature: Simple Experiment During Pandemic Covid-19Alisha Revalia Ghassani Amir, Tri Retnaningsih Soeprobowati, Riche Hariyati, Jumari, Murningsih, Lilih Khotimperwati and Udi TarwotjoE3S Web Conf., 317 (2021) 01102DOI: https://doi.org/10.1051/e3sconf/202131701102