@BOOK{ Book!D - 103044671,
AUTHOR = "/ D. F. Lawden",
TITLE = "Analytical mechanics",
LIBRARY= "کتابخانه مرکزی و مرکز اسناد دانشگاه کردستان",
SUBJECT = "Mechanics, Analytic- Problems, exercises, etc",
URL = "/book/103044671/Analytical-mechanics/"}