@BOOK{ Book!D - 90056273,
AUTHOR = " James A. Van Allen.",
TITLE = "924 elementary problems and answers in solar system astronomy",
LIBRARY= "کتابخانه مطالعات اسلامی به زبان‌های اروپایی",
SUBJECT = "Solar system, Miscellanea., 0",
URL = "/book/90056273/924-elementary-problems-and-answers-in-solar-syste/"}