@book{25030,
	author = {Gupta, Alka L},
	title = {Group theory and spectroscopy},
	publisher = {Pragati Prakashan},
	year = {2017},
	address = {Meerut},
	edition = {4th ed.},
	note = {2979 15/12/2017 HBD18/7133 27/12/2017 Main Budget}
}