@BOOK{ Book!D - 90176735,
AUTHOR = " by Charles Keeton.",
TITLE = "Principles of Astrophysics :",
LIBRARY= "مرکز و کتابخانه مطالعات اسلامی به زبان‌های اروپایی",
SUBJECT = "Astronomy.,Astrophysics.,Cosmology.,Gravitation.,Mechanics, Applied.,Mechanics.,Physics.,Astronomy.,Astrophysics.,Cosmology.,Gravitation.,Mechanics, Applied.,Mechanics.,Physics.",
URL = "/book/90176735/Principles-of-Astrophysics/"}