Gutierrez, Rosemary M., Socorro Martha Meg-ay V. Daupan, Ann Ville Fabian, and Cindy Cristel Miclat. 2015. “Microbiological Investigation on Some Biodegradable Plastics Used As Packaging Materials”. Asian Journal of Applied Sciences 3 (1). https://www.ajouronline.com/index.php/AJAS/article/view/2153.