00437nam a2200157Ia 4500 5813 5813 OSt 20200109145134.0 190216s9999||||xx |||||||||||||| ||und|| oclc 651.75 NAY/C Nayyar O P 1113 Commercial Correspondence / O.P Nayyar KIng Books, 2000. Delhi: 248p BK ddc 651.75 NAY/C 651.75 NAY/C