@BOOK{ Book!D - 99057026,
AUTHOR = "by Melvin Powers, Robert S. Starrett ,Starrett, Robert S.",
TITLE = "A practical guide to better concentration",
LIBRARY= "کتابخانه مرکزی و مرکز اسناد دانشگاه تهران",
SUBJECT = "Attention.,Learning, Psychology of.",
URL = "/book/99057026/A-practical-guide-to-better-concentration/"}