@BOOK{ Book!D - 103383274,
AUTHOR = "/ Kevin Hefferan and John O'Brien",
TITLE = "Earth materials",
LIBRARY= "كتابخانه مركزی و مركز اسناد دانشگاه شهيد چمران",
SUBJECT = "Geology--Textbooks",
URL = "/book/103383274/Earth-materials/"}