@BOOK{ Book!D - 77776216,
AUTHOR = "Gega, Peter C",
TITLE = "Science in elementary education",
LIBRARY= "کتابخانه مرکزی و مرکز اطلاع رسانی دانشگاه فردوسی مشهد",
SUBJECT = "Study and teaching )Elementary( ، Science",
URL = "/book/77776216/Science-in-elementary-education/"}