inscription
Portail d'information géographique

Résultats de la recherche (2 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • An essential supposition for the effective utilization of deposits is their geologic-ecological valuation. Four groups of deposits with different value, quantity and quality are distinguished. The territorial effects of the historical location
  • The advance of deposit reserves of mineral raw materials expresses the ratio between the quantitative extent of reserves explored and their annual requirement due to the mining of a deposit. The advance of reserves as a geological-economic category