@book{561,
	author = {Beiser, Arthur. and Shabhit Mahajan and S Rai Choudhury. and Beiser, Arthur. and Shabhit Mahajan and S Rai Choudhury.},
	title = {Concepts of modern physics.},
	publisher = {Tata Mc Graw-Hill.},
	year = {c2006},
	address = {New Delhi},
	edition = {7th}
}