geological survey ( attr. ), geological prospecting / exploration ( attr. )
геологоразведочная экспедиция — prospecting expedition
geological survey ( attr. ), geological prospecting / exploration ( attr. )
геологоразведочная экспедиция — prospecting expedition
Смирнитский. Русско-английский словарь сокращений Смирнитского. Russian-English Smirnitsky abbreviations dictionary. 2012