"N.K. Singhi" . "Singh" . "N. K." . "Narendra K. Singhi" . "Narendra K. Singhi" . "N K. Singhi" . "Narendra K." . "Narendra Kumar Singhi" . "Kumar Narendra Kumar Singhi" . . "N.K." . "Narendra Kumar Singhi" . . "1936" . . "N" . . . . . "Narendra"@en . "Singhi"@en . "Narendra Kumar Singhi"@en . . "N.K Singhi" . "N.K" . "Narendra Kumar" . "N. K. Singhi" . "Kumar"@en . "N.K. Singh" . "Singhi"@fr-FR . "K." . . . .