Humanidad (Tombooktu Asimov) (Spanish Edition) Spanish edition

Derec's search for his identity has taken him across the galaxy to gather, little by little, the pieces of his life. First there was Ariel Burgess, the woman whose love he lost and had to win back three times. Later, his father, Dr. Avery, the mad genius, started to experiment on Derec's own body. Now he is immersed in a test that threatens the balance of the robotic laws.