You will not learn anything in that other works are vested in the initiation and teaching radiesthésie.Cependant I understand why a friend of mine passionate about for many years recommended it to me; it is a real working tool for those who already handled the art of the pendulum with ease; his paintings are very well done; good quality and a very good readability. I do not see what area was not addressed in this book. It is also good support for training and leisure for those who are initiated pendulum; history does not lose its motivation from the beginning. I highly recommend it.
