1 نتائج 'observation'
Observation
Observación (es), Наблюдение (ru), ملاحظة (ar), Observation (fr)
Scientific methods
Empirical research, Research work
Science
> Scientific approach
Observación (es), Наблюдение (ru), ملاحظة (ar), Observation (fr)
http://vocabularies.unesco.org/thesaurus/concept9616