School children during the inaugural function of 'World Book Fair 2012' at Pragati Maidan in New Delhi. PTI

Union HRD Minister Kapil Sibal releases balloons during the inaugural function of 'World Book Fair 2012' at Pragati Maidan in New Delhi. PTI

Union HRD Minister Kapil Sibal releases a book during the inauguration of 'World Book Fair 2012'. Chairman of National Book Trust (NBT) Bipan Chandra is also seen. PTI

Chairman of National Book Trust Bipan Chandra with Professor Mridula Mukherjee during the inauguration of 'World Book Fair 2012". PTI

School children at a stall after the inauguration of 'World Book Fair 2012' in New Delhi. PTI

Book lovers at a stall in 'World Book Fair 2012'. PTI

Children at a stall after inauguration of 'World Book Fair 2012' at Pragati Maidan in New Delhi. PTI