@BOOK{ Book!D - 93057960,
AUTHOR = "/ Robert M. Wald",
TITLE = "General relativity",
LIBRARY= "کتابخانه مرکزی و مرکز اطلاع رسانی دانشگاه محقق اردبیلی ره",
SUBJECT = "General relativity (Physics)",
URL = "/book/93057960/General-relativity/"}