🌐EnglishEnglishDeutschEspañolFrançaisNederlandsTiếng ViệtРусскийالعربية中文EntityQ6672146· pop 5· linked from 41 articleslong-term experimentexperimental study on the empirical extraction of information over a long periodAvailable in 5 languagesDeutsch中文العربيةTiếng Việtvia Wikidata sitelinks · CC0ConnectionsBostonEntityInternational Standard Book NumberEntityCategoriesAgricultural researchExperiments