William F. Koch, Ph.D., M.D. – Research & Publications

1945 – History of Medicine, Wherever a System is Evolved, Long Time is Required for Adoption, Commercial Aspects of the Opposition, By Koch, Ph.D. M.D

1945 – History of Medicine, Wherever a System is Evolved, Long Time is Required for Adoption, Commercial Aspects of the Opposition, By Koch, Ph.D. M.D

By Koch, Ph.D. M.D.