Dr. M. P. A. Sheaffer
Source: "Dr. M. P. A. Sheaffer Bibliography." Author Wars, https://authorwars.com/authors/dr-m-p-a-sheaffer.html".
Source: "Dr. M. P. A. Sheaffer Bibliography." Author Wars, https://authorwars.com/authors/dr-m-p-a-sheaffer.html".