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لغة المحتوى

1 نتائج 'surveys'

Surveys (en)
Field work
Sample surveys, Survey analysis
Data collection, Population censuses, Questionnaires, Social surveys, Soil surveys, Surveying, Target groups
Science > Scientific approach
Encuesta (es), Обзоры (ru), استقصاءات (ar), مُسوح (ar), Enquête (fr)
http://vocabularies.unesco.org/thesaurus/concept7393