@book{23438,
	author = {DUBEY, S.K. D., and PANDEY, D. S.,},
	title = {A TEXTBOOKMOF SPHERICAL TRIGONOMETRY AND SPHERICAL ASTRONOMY},
	publisher = {DOMINENT PUBLISHER AND DISTRIBUTORS},
	year = {2011},
	address = {NEW DELHI},
	edition = {REP.}
}