Northrop, John HowardPrinted scientific article signed, nine pages, 6 x 8,75 inch, scientific article entitled `Biochemists, Biologists, and William of Occam` by John Howard Northrop reprinted from `The Excitement and Fascination of Science` Volume 30 (1961), signed and inscribed on the front page in dark ink "Herrn Bruno Berkeskupper compliments of John H. Northrop", with very mild signs of wear in nearly very fine condition.