Education Orin Nathaniel Chein Posted by Who's Who Site Administrator on June 1, 2018June 4, 2018 Most Recent Title: Professor Emeritus of Mathematics Industry: Education Years in Industry: 50 Years affiliated with Marquis Who’s Who: 8 Contact Orin Nathaniel Chein: Name(required) Email(required) Website Comment(required) Submit Share this:TwitterFacebookLinkedInLike this:Like Loading...