Research Notes Dennis J. Becker, Dennis J. Becker Advanced Development Program, Quality Control Department, Grumman Aircraft Engineering Corporation, Bethpage, Long Island, New York Search for other works by this author on: Oxford Academic Google Scholar Edward A. Calvelli Edward A. Calvelli Advanced Development Program, Quality Control Department, Grumman Aircraft Engineering Corporation, Bethpage, Long Island, New York Search for other works by this author on: Oxford Academic Google Scholar BioScience, Volume 14, Issue 1, January 1964, Pages 23–25, https://doi.org/10.2307/1293160 Published: 01 January 1964