1 resultados para 'surveys'
Surveys (en)
Encuesta (es), Enquête (fr), Обзоры (ru), استقصاءات (ar), مُسوح (ar)

Field work

Sample surveys, Survey analysis

Data collection, Population censuses, Questionnaires, Social surveys, Soil surveys, Surveying, Target groups

Science
> Scientific approach


http://vocabularies.unesco.org/thesaurus/concept7393