Bibliography of reports resulting from U. S. Geological Survey participation in the United States technical assistance program, 1940-65

by Heath, Jo Ann, 1923-
Published: U. S. Govt. Print. Off., 1965

Bibliography of reports resulting from U.S. Geological Survey participation in the United States technical assistance program, 1940-67

by Heath, Jo Ann, 1923-
Published: [U.S. Dept. of the Interior, Geological Survey; for sale by the Supt. of Docs.] U.S. Govt. Print. Off., 1968

Bibliographic supplement to USGS Bulletin 1426, 1975 to June 1979

by Bergquist, Wenonah E.
Published: U.S. Geological Survey, 1979