Romadhoni, M., Widiyaningrum, P. and Susanti, R. 2021. Development of GAVIAMORIDA E-Booklet based on Diversity of Gastropods and Bivalves Research at Mangrove Morosari Demak as Alternative Source of Learning. Journal of Innovative Science Education. 10, 3 (Dec. 2021), 292-297. DOI:https://doi.org/10.15294/jise.v10i1.45200.