@book{74686,
	author = {Spiegel, Murray R.},
	title = {Schaum's outline of theory and problems of Theoritical Mechanics : with an introduction to Lagrang's equations and hamiltoniant- theory /},
	publisher = {McGraw-Hill book ,},
	year = {c1967},
	series = {Schaum's outline series ;},
	address = {NewYork :}
}