00467cam a2200169ua 4500 23578 180531n2011 II |||gr||||Z||||||eng MAIN English DUBEY, S.K. D., AUTHOR. A TEXTBOOKMOF SPHERICAL TRIGONOMETRY AND SPHERICAL ASTRONOMY REP. NEW DELHI DOMINENT PUBLISHER AND DISTRIBUTORS 2011 310: 21+ HB. PANDEY, D. S., AUTHOR. BK 23438 23438