Financial and marketing analysis of pedada syrup (Sonneratia caseolaris L.) in Sei Nagalawan village, North Sumatra province, IndonesiaAgus Purwoko, Kansih Sri Hartini and Posma Agustinus RajagukgukE3S Web Conf., 332 (2021) 03006DOI: https://doi.org/10.1051/e3sconf/202133203006