Maurizo,
You are absolutely correct - the best book is the Manual of FreeDiving by Umberto, however you were replying to a thread that was around 4 years old so my responses at that time didn't include Umberto's book
You are absolutely correct - the best book is the Manual of FreeDiving by Umberto, however you were replying to a thread that was around 4 years old so my responses at that time didn't include Umberto's book