Harry E. Howell, 70, a lawyer and consultant on international financing project died Thursday at Fairtax Hospital of myelofibrosis, a blood disease. He lived in falls Church.

A sepcialist in international lay and accounting, Mr. Howell was a consultant to the United Nations and to the governments of the United States, Peru, Paraguay, Haiti, Togo, Tunishia, Vietnam, Laos, and the Central African Republic.

For nearly 20 years, he was an external auditor for the Pan American Health 1organization, the World Bank and the Inter-american Development Bank.

While working for the United Nations, Mr. Howell was controller of cost for clearing the Suez Canal of ships sunk in it during the 1956 Arab-Israeli War.

Born in London, England, he came to the United State with his family in 1917. He earned a law degree form Northeastern University in Boston.

During World War II, Mr. Howell was deputy chief of production and purchasing for the old Army Service Forces here. From 1945 to 1949, he was controller and administrator for liquidation for the United Nations Relief and Rehabilitation Administration.

After returning here in 1950, Mr. Howell was the Washington partner in the New York-based law firm of Dewitt, Pepper and Howell. He later established the Washington consulting firm of Howell and Company.

Survivors include his wife, Mary, of the home in Falls Church; a sister, Constance Mary Louise Askevold, of Watervile, N.H., and three brothers, Frank T., of Providence, R.I., Pericival G., of Glendale, Calif., and Kenneth C., of Maine. CAPTION: Picture, Harry e. HOWELL