Gupta, R.K. creator xxu New Delhi Pustak Mahal 2007r 7th rev. & enl. ed eng 448, 15 p 24 cm (pbk) Audio Cassette by R.K. Gupta this is reprint in 2007 428.0071 9788122300208 B-210647 RP-SNP-60 / UBH-07-08:2 / RP-07-08:ENG 090406