An obituary in Tuesday's editions of The Washington Post about David H. Wallace, 63, the director of the Office of International Fisheries in the National Oceanic and Atmospheric Administration, omitted the day of his death. Mr. Wallace died Saturday at his home in Silver Spring following a heart attack.

David H. Wallace, 63, the director of the Office of International Fisheries at the National Marine Fisheries Service, died at his home in Silver Spring following a heart attack. He was stricken while shoveling snow.

Mr. Wallace was an authority on marine fisheries and an early advocate of using the species approach to fish conservation. Under this system, the state of an entire species is assessed for the purpose of allocating fishing quotas.

Mr. Wallace has served on U.S. delegations that negotiated the Middle Atlantic Fisheries Agreement with the Soviet Union in 1967 and 1968 and was an adviser to the U.S. mission that negotiated a similar agreement with Poland in 1970.

He was a U.S. commissioner on the International Commission for North Atlantic Fisheries and chairman of the U.S. delegtion to the Intergovernmental Oceanographic Commission of UNESCO. He was chairman of the U.S. delegation to the IOC excutive council meeting in Canada in 1975.

In 1976, he was awarded the Gold Medal of the Commerce Department, of which the National Marine Fisheries Service is a part. It is the department's highest honor and was given in recognition of Mr. Wallace's contributions as a negotiator of international fishing agreements.

Mr. Wallace was born in Barclay, Md. He graduated from Washington College in Chestertown, Md., in 1935 and earned a master's degree from the University of Maryland in 1937. From 1936 to 1940, he conducted research at the Chesapeake Biological Laboratory.

In 1941, he joined the Maryland Department of Tidewater Fisheries as administrator. He was named director in 1945. In 1949 and 1950, he was chairman of the Maryland Board of Natural Resources.

From 1954 to 1961, Mr. Wallace was active in Chesapeake Bay oyster culture. From 1951 to 1962, he was executive director of the Oyster Institute of North America and the Sponge and Chamois Institute.

Mr. Wallace was appointed deputy director of fish and game for the Marine Region of the New York State Conservation Department in 1956. In 1963, he was named director of the department's division or marine and coastal resources.

He held the post until he joined the National Oceanic and Atmospheric Administration in 1971 as associate administrator for marine resources. NOAA is the parent organization of the National Marine Fisheries Service.

Mr. Wallace was a member of the American Society of Limcology and Oceanography the American Institute of Biological Sciences and the Marine Technology Society. He was an honorary life member of the National Shellfisheries Association and the Atlantic Estuarine Research Society.

He was the author of numerous papers for technical publications. He aslo wrote for general readers.

Survivors include his wife, the former Elizabeth McFarland, of Silver Spring; three sons, David, of Salisbury, Md., Stephen, of Baltimore, and Douglas, of Mountain View, Calif., and six grandchildren.