<http://aims.fao.org/aos/agrovoc/xDef_199bdef9> <http://www.w3.org/1999/02/22-rdf-syntax-ns#value> "The Winkler Method is a technique used to measure dissolved oxygen in freshwater systems."@en .
<http://aims.fao.org/aos/agrovoc/xDef_199bdef9> <http://purl.org/dc/terms/created> "2020-07-15T16:32:05.797+02:00"^^<http://www.w3.org/2001/XMLSchema#dateTime> .
<http://aims.fao.org/aos/agrovoc/xDef_199bdef9> <http://purl.org/dc/terms/source> <https://serc.carleton.edu/microbelife/research_methods/environ_sampling/oxygen.html> .