Openness, Secrecy, Authorship: Technical Arts and the Culture of Knowledge from Antiquity to the Renaissance by Long, Pamela O. [Johns Hopkins University Press, 2004] (Paperback) [Paperback]
I liked this book a lot but I didn't read all of the chapters. Mostly skipped the alchemy ones. But was able to glean some good stuff from this book. Aimed for the academic history readers. But my guess is anyone with interest in the evolution of the concept of intellectual property development in European medieval history would enjoy this book as well.