00310nam a2200109Ia 450000500170000000800410001708200180005810000200007624500330009626000620012930000090019120260205102543.0260111s9999||||xx |||||||||||||| ||und||  a523.02  Su46C  aSukhinder Singh 0aCosmic Kirna Atey Vishav(P )  aChandigarhbPunjab State University Text Book Boardc1973  a87p.