TY - GEN AU - United Nations Environment Programme AU - Intergovernmental Oceanographic Commission PY - 2009 SN - 978-92-807-3027-2 UR - https://wedocs.unep.org/handle/20.500.11822/13604 LA - English TI - UNEP/IOC Guidelines on Survey and Monitoring of Marine Litter: Regional Seas Reports and Studies No. 186; IOC Technical Series No. 83 M3 - Technical guideline ER -