Ancient Class Skill Book Redeem Voucher

Can Redeem one of the following items in the Astral encyclopedia "Special Rewards":
Blademaster Class Skill Manual
Desperado Class Skill Book
Warlord Class Skill Book
Ranger Class Skill Book
Sage Class Skill Book
Templar Class Skill Book
Hidden Assassin Class Skill Book
Archmage Class Skill Manual
Ronin Class Skill Book
Wind Demon Class Skill Book
Holy Dragon Envoy Class Skill Book

All items redeemed are non-tradable.