Children's book about microplastics illustrated by Primary students involved at the L.O.C.K. Project. The book is available in eBook format in 3 languages: Polish: https://drive.google.com/file/d/1lMTJxsjp7tCQS_5cs2yRWYUGP_dmSeLE/view?usp=sharing English: https://drive.google.com/file/d/1HDRx6n1x9ubNc1Dqw-uIkNDN_gRhEJGB/view?usp=sharing Portuguese: https://drive.google.com/file/d/1Ve0i0pM_kuT4q1tEJHgJjJGujX6HSyur/view?usp=sharing