@BOOK{ Book!D - 90226643,
AUTHOR = " Arthur B. Congdon, Charles R. Keeton.",
TITLE = "Principles of gravitational lensing :",
LIBRARY= "مرکز و کتابخانه مطالعات اسلامی به زبان‌های اروپایی",
SUBJECT = "Astrophysics.,Gravitational lenses.,Astrophysics.,Gravitational lenses.",
URL = "/book/90226643/Principles-of-gravitational-lensing/"}