1971, you should always site the sources you reference. Here, let me help you.
The deaf audiophile society. (2017). How to claim an observation is false if you lack the intellect to come up with a hypothesis : Scientifitic theory for those who are intellectually challenged and deaf. (3rd edition) Wiley.
The deaf audiophile society. (2017). How to claim an observation is false if you lack the intellect to come up with a hypothesis : Scientifitic theory for those who are intellectually challenged and deaf. (3rd edition) Wiley.