Text ( visual ) : unmediated Analytical mechanics / D.F. Lawden. -- London : G. Allen & Unwin , 1972. -- 78 p. : ill. ; 23 cm. -- (Problem solvers ; no. 4). -- Includes index. -- ISBN 0045310041 ; (BB03449038) ; https://ci.nii.ac.jp/ncid/BB03449038 Author Heading(s): Lawden, Derek F. -- Classification(s): LCC : QA809 ; DC : 531/.01/515. -- Subject Heading(s): LCSH : Mechanics, Analytic -- Problems, exercises, etc