Rhoda F. Dobbin, of Arlington, a former editor, publications librarian and Treasury Department employee, died of cancer Sunday at Manor Care Nursing Home in Arlington. She was 71.

A native of Connecticut, Mrs. Dobbin attended Middlebury College in Middlebury, Vt., and was a graduate of Morse Business College in Hartford, Conn. For seven years she was women's clubs editor and feature writer for the Hartford Courant.

Mrs. Dobbin later moved to New York, where she was an office manager for a theatrical press agent. During World War II, she worked there in Washington with the British Ministry of Supply Mission. She left to head the clip file library of the National Geographic magazine.

Mrs. Dobbin also worked as a secretary to executives at the Saturday Evening Post and the Small Homes Guide, an indexer and librarian for several publications, including the Congressional Quarterly news service.

Before going to the Treasury Department, where for 17 years she was a statistical assistant in the U.S. Savings Bond Division, Mrs. Dobbin worked as a multilingual typist and translator for several organizations.

Survivors include a sister, Helen Munkacsy, of Redlands, Calif.; a step-son, Richard S. Dobbin, and a grandson, Steven R., both of Winchester, Va.