Keystone tür Nedir?
Keystone or key-stone may refer to:
Keystone (architecture), a central stone or other piece at the apex of an arch or vault
Keystone (cask), a fitting used in ale casks
Görsel Kaynağı: Wikimedia Commons
Keystone or key-stone may refer to:
Keystone (architecture), a central stone or other piece at the apex of an arch or vault
Keystone (cask), a fitting used in ale casks
Görsel Kaynağı: Wikimedia Commons