@book{881830,
	author = {Vashisht Prashant and University of Delhi. Faculty of Medical Sciences. Department of Surgery and  Dr. J. K. S. Parihar Gu.},
	title = {Comparative analysis of colour vision assessment by ishihara charts, Nagel's anomaloscope and farnsworth munsell D-15},
	year = {2012}
}