Robert M. Bleiberg, editor and publisher of Barron's business and financial weekly, recently announced that he is being succeeded as editor by Alan Abelson, who has been managing editor of the Dow Jones & Co. publication since 1965.

Bleiberg will continue as publisher and editorial director, with responsibility for the editorial and business direction of the magazine. Abelson will be in charge of weekly news coverage. He will continue to write his front-page column "Up and Down Wall Street." Bleiberg will also continue to write his weekly editorial commentary.

George E. Moffat has been named advertising director of National Geographic Magazine. He was formerly manager of the magazine's Detroit advertising office. Moffat will replace James L. Till, who will become president and publisher of Scene Publishing Co. on the eve of the company's introduction of a new photojournalism magazine.

Gerald F. Messer has been named vice president of computer marketing services for Creative Mailing Consultants of America Inc. in its New York office, which opened Nov. 1. The firm has its headquarters in Capitol Heights.

H. Philip Nesbitt Jr., president of Communications Media Group Inc., was recently elected executive secretary of the Society of Newspaper Design.

Alton B. Duncanson, formerly manager for customer support, has been promoted to vice president of support services for Cognitronics Corp., based in Stamford, Conn. Prior to his employment at Cognitronics, Duncanson was director of manufacturing for Computer Entry Systems in Silver Spring.

Mark W. Bindrim has been hired as a producer at JRB Sound Studios in Bethesda. He will be producer and account executive for advertising, corporate, association and government clients.

Burton Y. Pines, an associate editor of Time magazine, has been appointed vice president for research at Heritage Foundation. During the past year, Pines has been on a leave of absence, serving as resident journalist at the American Enterprise Institute. Richard N. Holwill, former White House correspondent for National Public Radio, has been appointed vice president for government information and special projects at Heritage.

David Ungerer has been named president of Reston Publishing Co., which is owned by Prentice-Hall Inc. He previously served as executive vice president.