Isotopes in hydrology : proceedings of the Symposium Symposium on Isotopes in Hydrology, (1966 : Vienna, Austria) International Union of Geodesy and Geophysics. International Atomic Energy Agency. Radioisotopes in hydrology Congresses. GB651 .S93 1966 539.74 19 INI "STI/PUB/141." Papers in English, French, or Russian; abstracts and discussions in English. Includes bibliographies and author index. Vienna, International Atomic Energy Agency, c1967. c1967. 1967 Text 740 p. : eng engfrerus Proceedings series