00434nam a22001577a 4500008004500000020001800045082001300063100002100076245002400097250001200121260005400133300001200187650002500199650002500224650002700249250904b     2025      ||||| |||| 00| 0 eng d  a9789353675356  a530bUPA  aUpadhyaya, J. C.  aClassical mechanics  a3rd ed.  aMumbaibHimalaya Publishing House Pvt. Ltd.c2025  a554pgs.  aLangrangian Dynamics  aHamiltonian Dynamics  aVariational Principles