00303nam a2200121Ia 4500008004100000082001000041082001000051100001500061100001300076245006100089260002200150260000900172230118s9999||||xx |||||||||||||| ||und||  a515.4  bGOY/F  aj.kbgoyal  bk.pgupta 0afourier series &fourier integrals and their applications  bprakati prakashan  c1984