Dr. Edwin L. Cox, 62, an official in the Army's biological warfare programs in Utah and at Ft. Detrick, Md., during the 1950s died of heart failure Friday at Holy Cross Hospital.

Dr. Cox was later a mathermatical statistician with Data Systems Agricultural Research Service of the U.S. Agricultural Department in Beltsville, Maryland.

After four years as chief o test, design, and evaluation with the Army's biological warfare program in Tooele, Utah, Dr. Cox came to Fort Detrick, Md., where he was chief program researcher for the biological warfare program.

After leaving the Army program, Dr. Cox became a mathematical statistician for the Biometrical Services Agriculture Research Service of the USDA.

Dr. Cox, who was born in Canada, also did work with fisheries and taught at many schools, including the University of Utah, William and Mary College, Case-Western Institute and the University of Maryland.

Dr. Cox received his B.A. in mathematics from Mount Alison University, Sacksville, N.B., and his masters degree from Virginia Polytechnic Institute in Blacksburg, Va. He also had a masters degree from Arcadia University, Sacksville, N.B. Dr. Cox received a doctorate from North Carolina State College.

He also worked in fishery research from 1946-1951 with the Atlantic Biological Station in St. Andrews, N.B., and the Virgin Islands. He later worked at the fishery laboratories in Yorktown, Va.

His principal interest was the study of the quantitative aspects of fish population.

He is survived by his wife, Claire Bliss Landers Cox, of the home in Silver Spring; a sister, Mrs. Martha Davison, of Montreal, two brothers, Arthur, of Moncton, N.B., and C. Donald, of Ottawa, Ont.