تماشای ویدئو Igneous Rocks Introduction از آی-ویدئو

Introduction to the formation of igneous rocks, including, extrusive and intrusive rocks. Discussion of variations in rock crystal sizes. "Cipher" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/
29 مرداد 1396
آی-ویدئو